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Index: S
- s class
: sendmail, 32.5. Alphabetized Reference
- =S command (rule-testing mode)
: sendmail, 8.5. The Workspace
- S configuration command
- sendmail, 5.3.4. Rule Sets
- sendmail, 8.3. Rule Sets
- sendmail, 27.2. Comments
- sendmail, 29.1. The S Configuration Command
- -s database switch
: sendmail, 33.3.4.10. -s space replacement character (V8.7 and above)
- s flag
: sendmail, 30.8. Alphabetized F= Flags
- S flag
: sendmail, 30.8. Alphabetized F= Flags
- S line (host status file)
: sendmail, B.1. Status file lines
- S line (qf file)
- sendmail, 23.4. Printing the Queue
- sendmail, 23.9. The qf File Internals
- $s macro
- sendmail, 23.9. The qf File Internals
- sendmail, 31.10. Alphabetized Reference
- sendmail, 36.7. Alphabetized Reference
- $S macro
: sendmail, 31.10. Alphabetized Reference
- s option
: (see SuperSafe (s) option)
- S option
: (see StatusFile (S) option)
- S rule-testing command
: sendmail, 38.4.1. Show Rules in a Rule Set with =S
- -s switch (sendmail)
: sendmail, 36.7. Alphabetized Reference
- S/Key codebook scheme
- Building Internet Firewalls, 10.3.1. One-Time Passwords
- Practical UNIX & Internet Security, 8.7.3. Code Books
- S= equate
- sendmail, 6.3. The local Delivery Agent
- sendmail, 6.3.1. Skipping Rule Sets
- sendmail, 11.2. Rule Set S=
- sendmail, 29.6.2. Selecting S= and R=
- sendmail, 30.4. The Equates
- sa command
: Practical UNIX & Internet Security, 10.2. The acct/pacct Process Accounting File
- sabotage
- (see denial of service)
- (see terrorism; vandalism)
- safe, storing security information in
: TCP/IP Network Administration, 12.2.6. Secure Shell
- SafeFileEnvironment option
- sendmail, 22.8.3.6. The SafeFileEnvironment option
- sendmail, 24.2.2. Delivery to Files
- sendmail, 34.8. Alphabetized Reference
- SAGE (System Administrators Guild)
: Building Internet Firewalls, A.5.5. System Administrators Guild
- salt
- Practical UNIX & Internet Security, 8.6.2. What Is Salt?
- Practical UNIX & Internet Security, 8.6.3. What the Salt Doesn't Do
- sanitizing media
: Practical UNIX & Internet Security, 12.3.2.3. Sanitize your media before disposal
- SATAN package
- Building Internet Firewalls, 12.2.4. Responding to Probes
- Building Internet Firewalls, B.2.4. SATAN
- Practical UNIX & Internet Security, 17.6.1. SATAN
- Practical UNIX & Internet Security, E.4.7. SATAN
- SATAN tool
: TCP/IP Network Administration, 12.4.3.2. SATAN
- saturated networks
: (see networks and networking)
- savacct file
: Practical UNIX & Internet Security, 10.2. The acct/pacct Process Accounting File
- saved UID
: Practical UNIX & Internet Security, 4.3.2. Saved IDs
- SaveFromLine (f) option
- sendmail, 34.8. Alphabetized Reference
- sendmail, 36.7. Alphabetized Reference
- saving
- aliases in symbol table
- sendmail, 24.5.4. No DBM Aliasing
- sendmail, 33.8. Alphabetized Reference
- backup media
: Practical UNIX & Internet Security, 7.1.5. How Long Should You Keep a Backup?
- bounced messages in qf file
- sendmail, 23.3.6. Savemail Panic
- (see also archiving information; backups)
- sbrk command
: Practical UNIX & Internet Security, 23.2. Tips on Avoiding Security-related Bugs
- scaling well
- TCP/IP Network Administration, 2.4. Internet Routing Architecture
- TCP/IP Network Administration, 3.3. Domain Name Service
- TCP/IP Network Administration, 4.2.1. Obtaining an IP Address
- TCP/IP Network Administration, 7.5.1. Exterior Gateway Protocol
- scanf command
- sendmail, 32.1.2.1. scanf(3) variations
- Practical UNIX & Internet Security, 23.2. Tips on Avoiding Security-related Bugs
- SCANF macro
: sendmail, 18.8. Alphabetized Reference
- scanning networks
: Practical UNIX & Internet Security, 17.6. Network Scanning
- SCCS (Source Code Control System)
- Practical UNIX & Internet Security, 7.3.2. Building an Automatic Backup System
- Practical UNIX & Internet Security, 17.3. Primary UNIX Network Services
- Scherbius, Arthur
: Practical UNIX & Internet Security, 6.3. The Enigma Encryption System
- score keepers
: Building Internet Firewalls, 1.2.2.3. Score Keepers
- scp (secure copy)
: TCP/IP Network Administration, 12.2.6. Secure Shell
- screen savers
: Practical UNIX & Internet Security, 12.3.5.2. X screen savers
- screend package
- Building Internet Firewalls, 6.5. Conventions for Packet Filtering
- Building Internet Firewalls, B.3.1. screend
- screened host architecture
- Building Internet Firewalls, 4.2.2. Screened Host Architecture
- Building Internet Firewalls, 9.2. Screened Host Architecture
- screened subnet architecture
- Building Internet Firewalls, 4.2.3. Screened Subnet Architecture
- Building Internet Firewalls, 9.1. Screened Subnet Architecture
- with dual-homed host architecture
: Building Internet Firewalls, 4.3.8. It's OK to Use
- screening routers
- Building Internet Firewalls, 4.1.1. Packet Filtering
- Building Internet Firewalls, 6. Packet Filtering
- (see also packet filtering)
- acceptable addresses for
: Building Internet Firewalls, 6.5. Conventions for Packet Filtering
- choosing
: Building Internet Firewalls, 6.8. Choosing a Packet Filtering
- configuring
: Building Internet Firewalls, 6.2. Configuring a Packet Filtering
- proxy systems and
: Building Internet Firewalls, 7. Proxy Systems
- rules for
: Building Internet Firewalls, 6.5. Conventions for Packet Filtering
- where to use
: Building Internet Firewalls, 6.8.8. It Should Have Good Testing and
- screens, multiple
: Practical UNIX & Internet Security, 12.3.4.3. Multiple screens
- script command
: Practical UNIX & Internet Security, 24.1.2. Rule #2: DOCUMENT
- script files
- TCP/IP Network Administration, 1.7. Application Layer
- TCP/IP Network Administration, 6.1.5.1. Enabling and disabling the interface
- (see also startup script)
- (see also UNIX, systems)
- debugging tips
: TCP/IP Network Administration, 6.4.4. Troubleshooting Serial Connections
- invoking dialup IP (dip)
: TCP/IP Network Administration, A.1. Dial-Up IP
- scriptfile
: TCP/IP Network Administration, A.3. chat
- scripting language
: TCP/IP Network Administration, 6.3.2. Dial-Up PPP
- scripts, CGI
: (see CGI, scripts)
- scytales
: Practical UNIX & Internet Security, 6.1. A Brief History of Cryptography
- search entry, in resolv.conf
: TCP/IP Network Administration, 8.2.1. The Resolver Configuration File
- search programs
: Building Internet Firewalls, 2.6. Other Information Services
- search warrants
- Practical UNIX & Internet Security, 26.2.4. Hazards of Criminal Prosecution
- Practical UNIX & Internet Security, 26.2.5. If You or One of Your Employees Is a Target
- searching for .rhosts file
: Practical UNIX & Internet Security, 17.3.18.5. Searching for .rhosts files
- Seberry, Jennifer
: Practical UNIX & Internet Security, 6.5.4.3. HAVAL
- secondary nameservers
- TCP/IP Network Administration, 3.3.4. BIND, resolver, and named
- TCP/IP Network Administration, 4.4.1. Obtaining a Domain Name
- TCP/IP Network Administration, 8.1.1. BIND Configurations
- TCP/IP Network Administration, C.2. named.boot Configuration Commands
- configuring
: TCP/IP Network Administration, 8.3.1.2. Primary and secondary server configurations
- secrecy
- defined
: TCP/IP Network Administration, 12.1.1. Assessing the Threat
- Kerberos
: Practical UNIX & Internet Security, 19.6.1.3. Authentication, data integrity, and secrecy
- keys for
: TCP/IP Network Administration, 6.3.4. PPP Daemon Security
- secret keys
: Practical UNIX & Internet Security, 6.4.6. RSA and Public Key Cryptography
- Secret Service, U.S.
- Practical UNIX & Internet Security, 26.2.2. Federal Jurisdiction
- Practical UNIX & Internet Security, F.3.3. U.S. Secret Service
- secure copy (scp)
: TCP/IP Network Administration, 12.2.6. Secure Shell
- Secure Hash Algorithm (SHA)
- Practical UNIX & Internet Security, 6.5.3. Digital Signatures
- Practical UNIX & Internet Security, 6.5.4.2. SHA
- Secure HTTP
- Building Internet Firewalls, 8.6.4. Secure HTTP
- Practical UNIX & Internet Security, 18.4.1. Eavesdropping Over the Wire
- Secure NFS
: Practical UNIX & Internet Security, 19.3.2.4. Using Secure NFS
- -secure option
- Practical UNIX & Internet Security, 19.3.2.4. Using Secure NFS
- Practical UNIX & Internet Security, 19.4.4.5. Spoofing NIS
- secure option for /etc/exports
: Practical UNIX & Internet Security, 20.2.1.1. /etc/exports
- SECURE points
: TCP/IP Network Administration, 12.4.3.1. COPS
- Secure RPC
- Practical UNIX & Internet Security, 19.3. Secure RPC (AUTH_DES)
- Practical UNIX & Internet Security, 19.3.4. Limitations of Secure RPC
- with NIS/NIS+
- Practical UNIX & Internet Security, 19.3.2. Setting Up Secure RPC with NIS
- Practical UNIX & Internet Security, 19.3.4. Limitations of Secure RPC
- NTP and
: Practical UNIX & Internet Security, 19.3.1.3. Setting the window
- reauthentication
: Practical UNIX & Internet Security, 19.3.1.3. Setting the window
- versus Kerberos
: Practical UNIX & Internet Security, 19.6.2. Kerberos vs. Secure RPC
- secure shell (ssh)
: TCP/IP Network Administration, 12.2.6. Secure Shell
- Secure Socket Layer
: Practical UNIX & Internet Security, 18.4.1. Eavesdropping Over the Wire
- secure terminals
: Practical UNIX & Internet Security, 8.5.1. Secure Terminals
- SECURE_USERS variable
: TCP/IP Network Administration, 12.4.3.1. COPS
- SecureID
: Practical UNIX & Internet Security, 8.7.2. Token Cards
- SecureNet key
: Practical UNIX & Internet Security, 8.7.2. Token Cards
- security
- Building Internet Firewalls, 1.4. What Is an Internet Firewall?
- Building Internet Firewalls, 8.1.1.1. SMTP for
- Building Internet Firewalls, 8.10.4. DNS Security Problems
- Practical UNIX & Internet Security, 2.1. Planning Your Security Needs
- Practical UNIX & Internet Security, 9.1.2. Read-only Filesystems
- Practical UNIX & Internet Security, 12.1.1. The Physical Security Plan
- sendmail, 18.2. Vendor Versus Compiling
- sendmail, 22. Security
- TCP/IP Network Administration, 1.7. Application Layer
- (see also firewalls)
- (see also integrity)
- (see also incidents, attacks, threats)
- (see also intruders/attackers)
- (see also physical security)
- (see also printers and printing)
- (see also system administration)
- against system failure
: Building Internet Firewalls, 3.5. Fail-Safe Stance
- audit
: (see auditing)
- bastion host speed and
: Building Internet Firewalls, 5.3.2. How Fast a Machine?
- bogus qf files
- sendmail, 23.3. A Bogus qf File (V8 only): Qf
- sendmail, 23.9. The qf File Internals
- C line (qf file)
: sendmail, 23.9. The qf File Internals
- CGI scripts
- Practical UNIX & Internet Security, 18.2.3. Writing Secure CGI Scripts and ProgramsThe
- Practical UNIX & Internet Security, 18.2.4.1. Beware mixing HTTP with anonymous FTP
- changed detection
- Practical UNIX & Internet Security, 9.2. Detecting Change
- Practical UNIX & Internet Security, 9.3. A Final Note
- check_relay rule set
: sendmail, 29.10.3. The check_relay Rule Set
- checking arguments
: Practical UNIX & Internet Security, 23.2. Tips on Avoiding Security-related Bugs
- choke points
- Building Internet Firewalls, 6.1. Why Packet Filtering?
- Building Internet Firewalls, 9.1.4.3. Choke point
- Building Internet Firewalls, 9.2.3.3. Choke point
- commercial authentication systems
: Building Internet Firewalls, 10.4.3. Commercial Solutions
- critical messages to log
- Practical UNIX & Internet Security, 10.5.3. syslog Messages
- Practical UNIX & Internet Security, 10.5.3.1. Beware false log entries
- cryptography
- (see cryptography)
- (see encryption)
- default stances
: Building Internet Firewalls, 6.2.3. Default Permit Versus Default Deny
- default user identities
: sendmail, 13.2.5. The Default User Identities
- defense in depth
- Building Internet Firewalls, 9.1.4.2. Defense in depth
- Building Internet Firewalls, 9.2.3.2. Defense in depth
- definition of
: Practical UNIX & Internet Security, 1.1. What Is Computer Security?
- designing for network
: Building Internet Firewalls, 1.4.3. Buying Versus Building
- digital signatures
: (see digital signatures)
- disabling finger
: Practical UNIX & Internet Security, 17.3.8.2. Disabling finger
- disk quotas
: Practical UNIX & Internet Security, 25.2.2.5. Using quotas
- diversity of defense
- Building Internet Firewalls, 3.7. Diversity of Defense
- Building Internet Firewalls, 9.1.4.7. Diversity of defense
- Building Internet Firewalls, 9.2.3.7. Diversity of defense
- dormant accounts, finding
: Practical UNIX & Internet Security, 8.4.3. Finding Dormant Accounts
- drills
: Practical UNIX & Internet Security, 24.1.3. Rule #3: PLAN AHEAD
- encryption, network-level
: Building Internet Firewalls, 10.5. Network-Level Encryption
- environment variables and
- sendmail, 5.3.12. Environment variables
- sendmail, 22.2. The Environment
- /etc/passwd
: (see /etc/group file; /etc/passwd file)
- -f switch and
- sendmail, 14.6. Trusted User
- sendmail, 22.8.1. Trusted Users
- fail-safe stance
- Building Internet Firewalls, 9.1.4.5. Fail-safe stance
- Building Internet Firewalls, 9.2.3.5. Fail-safe stance
- file permissions
: sendmail, 13.2.4. The Default File Permissions
- files and
: (see appending to files)
- firewalls
: (see firewalls)
- forged mail
- sendmail, 13.2.1. The Location of the Queue Directory
- sendmail, 22.7. Forged Mail
- four steps toward
: Practical UNIX & Internet Security, 2.4.4.7. Defend in depth
- host
: Building Internet Firewalls, 1.3.3. Host Security
- HTTP
: Building Internet Firewalls, 8.6.3. HTTP Security
- identification protocol
: Practical UNIX & Internet Security, 17.3.12. Identification Protocol (auth) (TCP Port
- important of simplicity of
: Building Internet Firewalls, 3.8. Simplicity
- improving DES algorithm
- Practical UNIX & Internet Security, 6.4.5. Improving the Security of DES
- Practical UNIX & Internet Security, 6.4.5.2. Triple DES
- incident response teams
: (see incident response teams)
- incidents
: (see incidents, attacks, threats)
- :include: lists
: sendmail, 25.2.2. Tradeoffs
- insecure networks
: Building Internet Firewalls, 4.4.2. Insecure Networks
- internal network protection
: Building Internet Firewalls, 4.4. Internal Firewalls
- IP
- Practical UNIX & Internet Security, 16.3. IP Security
- Practical UNIX & Internet Security, 16.3.3. Authentication
- IP_SRCROUTE macro
: sendmail, 18.8. Alphabetized Reference
- IRC and
: Building Internet Firewalls, 8.9.2. Internet Relay Chat
- keeping checksums secure
: Building Internet Firewalls, 13.5.3. Keeping Secured Checksums
- lack of
: Building Internet Firewalls, 1.3. How Can You Protect Your Site?
- laws and
: (see laws)
- least privilege
- Building Internet Firewalls, 9.1.4.1. Least privilege
- Building Internet Firewalls, 9.2.3.1. Least privilege
- legal liability
- Practical UNIX & Internet Security, 26.4. Other Liability
- Practical UNIX & Internet Security, 26.4.7. Harassment, Threatening Communication, and Defamation
- legal responsibilities
: Building Internet Firewalls, 11.2.3. External Factors That Influence
- levels of NIS+ servers
: Practical UNIX & Internet Security, 19.5.5. NIS+ Limitations
- link-level
: Practical UNIX & Internet Security, 16.3.1. Link-level Security
- of machine
: Building Internet Firewalls, 5.8.1. Securing the Machine
- mechanisms included within applications
: TCP/IP Network Administration, 12.2.5. Secure the r Commands
- message digests
: (see message digests)
- modem pools
: Building Internet Firewalls, 10.6. Terminal Servers and Modem Pools
- modems and
- Practical UNIX & Internet Security, 14.4. Modems and Security
- Practical UNIX & Internet Security, 14.4.4.2. Protection against eavesdropping
- monitoring
- TCP/IP Network Administration, 12.4. Security Monitoring
- (see logs/logging)
- multilevel (defense in depth)
- Practical UNIX & Internet Security, 1.3. History of UNIX
- Practical UNIX & Internet Security, 2.4.4.7. Defend in depth
- Practical UNIX & Internet Security, 2.5.3. Final Words: Risk Management Means Common Sense
- Practical UNIX & Internet Security, 17.2. Controlling Access to Servers
- name service and
: Practical UNIX & Internet Security, 16.3.2. Security and Nameservice
- national
: Practical UNIX & Internet Security, 26.2.2. Federal Jurisdiction
- netacl
: Building Internet Firewalls, 5.8.3.2. Using netacl to protect services
- network
- (see network services)
- (see networks and networking)
- operating system bugs
: Building Internet Firewalls, 5.8.1.2. Fix all known system bugs
- passwords
- Practical UNIX & Internet Security, 3.2. Passwords
- Practical UNIX & Internet Security, 3.6.1. Bad Passwords: Open Doors
- Practical UNIX & Internet Security, 3.6.4. Passwords on Multiple Machines
- Practical UNIX & Internet Security, 3.8. Summary
- (see also passwords)
- personnel
- Practical UNIX & Internet Security, 13. Personnel Security
- Practical UNIX & Internet Security, 13.3. Outsiders
- Practical UNIX & Internet Security, A.1.1.12. Chapter 13: Personnel Security
- planning
: TCP/IP Network Administration, 12.1. Security Planning
- policy
- Building Internet Firewalls, 1.4.1.1. A firewall is a focus for security
- Building Internet Firewalls, 11. Security Policies
- Practical UNIX & Internet Security, 1.2. What Is an Operating System?
- Practical UNIX & Internet Security, 2. Policies and Guidelines
- Practical UNIX & Internet Security, 2.5.3. Final Words: Risk Management Means Common Sense
- TCP/IP Network Administration, 12.1. Security Planning
- reviewing
: Building Internet Firewalls, 11.1.1.5. Provision for reviews
- writing
: TCP/IP Network Administration, 12.1.3. Writing a Security Policy
- of POP
: Building Internet Firewalls, 8.1.2. Post Office Protocol
- practicing drills for
: Building Internet Firewalls, 13.5.7. Doing Drills
- preventing workstation as gateway
: sendmail, 20.2.2. Workstation Refuses to Act as a Mail Gateway
- for printers
: TCP/IP Network Administration, 4.5.2. Print servers
- protecting backups
- Building Internet Firewalls, 5.10. Protecting the Machine and Backups
- Practical UNIX & Internet Security, 7.1.6. Security for Backups
- Practical UNIX & Internet Security, 7.1.6.3. Data security for backups
- (see also backups)
- protocol, and proxying
: Building Internet Firewalls, 7.4.3. Protocol Security
- publications, list of
: TCP/IP Network Administration, 12.8. Words to the Wise
- published resources on
- Building Internet Firewalls, A. Resources
- Practical UNIX & Internet Security, D. Paper Sources
- Practical UNIX & Internet Security, D.2. Security Periodicals
- queuing everything
: sendmail, 34.8. Alphabetized Reference
- rejecting mail from certain sites
: sendmail, 20.2.6. Reject Mail from Spamming or Mail-bombing Sites
- responding to breakins
- Practical UNIX & Internet Security, 24. Discovering a Break-in
- Practical UNIX & Internet Security, 24.7. Damage Control
- responding to incidents
: Building Internet Firewalls, 13. Responding to Security Incidents
- restricting logins
: Practical UNIX & Internet Security, 8.3. Restricting Logins
- reviewing response strategies
: Building Internet Firewalls, 13.4.8. Periodic Review of Plans
- .rhosts
: (see .rhosts file)
- risks
- TCP/IP Network Administration, 4.1. Connected and Non-Connected Networks
- TCP/IP Network Administration, 4.2.2. Defining the Subnet Mask
- TCP/IP Network Administration, 5.3.1.1. Options
- TCP/IP Network Administration, 5.3.1.2. Pseudo-device
- TCP/IP Network Administration, 5.4. The Internet Daemon
- TCP/IP Network Administration, 9.1.2.1. The share command
- TCP/IP Network Administration, 13.2.1. Creating an FTP Server
- RunAsUser option
: sendmail, 34.8. Alphabetized Reference
- safe sendmail options
: sendmail, 34.1.4. Options that Are Safe
- sendmail problems
: Practical UNIX & Internet Security, 17.3.4.1. sendmail and security
- sendmail restricted shell
: sendmail, 19.6. Alphabetized m4 Macros
- sendmail.cf and
: sendmail, 22.4. The Configuration File
- Skipjack algorithm
: Practical UNIX & Internet Security, 6.4.1. Summary of Private Key Systems
- SNMP
- Building Internet Firewalls, 8.12.1. Simple Network Management
- Practical UNIX & Internet Security, 17.3.15. Simple Network Management Protocol (SNMP) (UDP Ports
- software piracy
: Practical UNIX & Internet Security, 26.4.2.1. Software piracy and the SPA
- sources of information
: TCP/IP Network Administration, 12.1.2.2. Use mailing lists to distribute information
- standards of
: Practical UNIX & Internet Security, 2.4.2. Standards
- strategies for
: Building Internet Firewalls, 3. Security Strategies
- SUID_ROOT_FILES_OK macro
: sendmail, 18.8. Alphabetized Reference
- superuser problems
: Practical UNIX & Internet Security, 4.2.1.5. The problem with the superuser
- system crashes
- Building Internet Firewalls, 5.10.1. Watch Reboots Carefully
- Practical UNIX & Internet Security, 10.7.2.1. Exception and activity reports
- TCP/IP Network Administration, 9.1.1. NFS Daemons
- TCP/IP Network Administration, 9.2.2. Solaris Line Printer Service
- TCP Wrapper
: Building Internet Firewalls, 5.8.3.1. Using the TCP Wrapper package to protect services
- terminal servers
: Building Internet Firewalls, 10.6. Terminal Servers and Modem Pools
- through obscurity
- Building Internet Firewalls, 1.3.2. Security Through Obscurity
- Practical UNIX & Internet Security, 2.5. The Problem with Security Through Obscurity
- Practical UNIX & Internet Security, 2.5.3. Final Words: Risk Management Means Common Sense
- Practical UNIX & Internet Security, 8.8.9. Account Names Revisited: Using Aliases for Increased
- Practical UNIX & Internet Security, 18.2.4. Keep Your Scripts Secret!
- time information and
: Building Internet Firewalls, 8.13. Network Time Protocol (NTP)
- tools for
: Practical UNIX & Internet Security, 11.1. Programmed Threats: Definitions
- Tripwire package
- Practical UNIX & Internet Security, 9.2.4. Tripwire
- Practical UNIX & Internet Security, 9.2.4.2. Running Tripwire
- trusted users
: sendmail, 19.6. Alphabetized m4 Macros
- universal participation
: Building Internet Firewalls, 3.6. Universal Participation
- UNIX and
- Practical UNIX & Internet Security, 1. Introduction
- Practical UNIX & Internet Security, 1.4. Security and UNIX
- Practical UNIX & Internet Security, 1.4.3. Add-On Functionality Breeds Problems
- user awareness of
- Practical UNIX & Internet Security, 1.4.1. Expectations
- Practical UNIX & Internet Security, 2. Policies and Guidelines
- Practical UNIX & Internet Security, 2.4.4.4. Concentrate on education
- Practical UNIX & Internet Security, 13.2.2. Ongoing Training and Awareness
- UUCP
: (see UUCP)
- weakest link
- Building Internet Firewalls, 3.4. Weakest Link
- Building Internet Firewalls, 9.1.4.4. Weakest link
- Building Internet Firewalls, 9.2.3.4. Weakest link
- weakness-finding tools
: Practical UNIX & Internet Security, 11.1.1. Security Tools
- when proxying is ineffective
: Building Internet Firewalls, 7.8.2. Proxying Won't Secure the Service
- whois service
: Building Internet Firewalls, 8.8.2. whois
- World Wide Web
- Practical UNIX & Internet Security, 18. WWW Security
- Practical UNIX & Internet Security, 18.7. Summary
- X Window System
- Practical UNIX & Internet Security, 17.3.21.2. X security
- Practical UNIX & Internet Security, 17.3.21.3. The xhost facility
- X11 window system mechanisms
: Building Internet Firewalls, 8.16. X11 Window System
- Security Emergency Response Team (SERT)
: Practical UNIX & Internet Security, F.3.4.4. Australia: Internet .au domain
- security file (UUCP)
: Practical UNIX & Internet Security, 10.3.4. uucp Log Files
- security holes
- Practical UNIX & Internet Security, 2.5. The Problem with Security Through Obscurity
- (see also back doors; threats)
- ftpd program
: Practical UNIX & Internet Security, 6.5.2. Using Message Digests
- mailing list for
: Practical UNIX & Internet Security, E.1.3.3. Bugtraq
- reporting
: Practical UNIX & Internet Security, 2.5.1. Going Public
- ruusend in L.cmds file
: Practical UNIX & Internet Security, 15.4.3. L.cmds: Providing Remote Command Execution
- SUID/SGID programs
: Practical UNIX & Internet Security, 5.5.3.1. write: Example of a possible SUID/SGID security
- /usr/lib/preserve
: Practical UNIX & Internet Security, 5.5.3.2. Another SUID example: IFS and the /usr/lib/preserve
- UUCP
: Practical UNIX & Internet Security, 15.7. Early Security Problems with UUCP
- sed scripts
: Practical UNIX & Internet Security, 11.1.4. Trojan Horses
- seeds, random number
- Practical UNIX & Internet Security, 23.6. Tips on Generating Random Numbers
- Practical UNIX & Internet Security, 23.8. Picking a Random Seed
- segments
- TCP/IP Network Administration, 1.3. TCP/IP Protocol Architecture
- TCP/IP Network Administration, 1.6.2. Transmission Control Protocol
- select system call
: Practical UNIX & Internet Security, 17.1.3. The /etc/inetd Program
- selecting delivery agents
: (see rule set 0)
- selection lists
: Practical UNIX & Internet Security, 18.2.3.1. Do not trust the user's browser!
- self-destruct sequences
: Practical UNIX & Internet Security, 27.2.1. Hardware Bugs
- semicolon (;)
- comment character
: TCP/IP Network Administration, C.3.1. Standard Resource Records
- ending gated configuration statements
- TCP/IP Network Administration, 7.7.1.1. A host configuration
- TCP/IP Network Administration, B.2. The gated Configuration Language
- semiprivileged users
: sendmail, 22.5. Permissions
- sender
- sendmail, 29.6.2. Selecting S= and R=
- (see also S= equate)
- address of
- sendmail, 6.3. The local Delivery Agent
- sendmail, 11.1. Flow of the Sender's Address
- sendmail, 23.4. Printing the Queue
- sendmail, 23.9. The qf File Internals
- sendmail, 31.10. Alphabetized Reference
- sendmail, 36.7. Alphabetized Reference
- TCP/IP Network Administration, 10.6.3. The Set Ruleset Command
- TCP/IP Network Administration, 10.8.1. Testing Rewrite Rules
- (see also $f macro; $g macro; rule set 1)
- default format of
: sendmail, 31.10. Alphabetized Reference
- genericstable feature
: sendmail, 19.6. Alphabetized m4 Macros
- hostname part
: (see $s macro)
- rewriting
: sendmail, 11.4.1. Rewrite the Lone Username
- testing with check_compat
: sendmail, 29.10.4. The check_compat Rule Set
- check_mail rule set
: sendmail, 29.10.1. The check_mail Rule Set
- of envelope, logging
: sendmail, 26.1.3.3. from= show envelope sender
- full name for
- sendmail, 36.7. Alphabetized Reference
- (see $x macro)
- headers for
: sendmail, 35.6.2. Sender Headers
- running sendmail as
: sendmail, 36.7. Alphabetized Reference
- unknown
: sendmail, 35.10. Alphabetized Reference
- "Sender:" header line
: sendmail, 35.10. Alphabetized Reference
- SENDFILES= command
- Practical UNIX & Internet Security, 15.5.1.3. A Sample Permissions file
- Practical UNIX & Internet Security, 15.5.2. Permissions Commands
- sending messages
- sendmail, 13.4. Sending Mail
- sendmail, 14.5. Sending Real Mail
- sendmail
- Building Internet Firewalls, 2.1. Electronic Mail
- Building Internet Firewalls, 3.1. Least Privilege
- Building Internet Firewalls, 8.1.1.1. SMTP for
- Practical UNIX & Internet Security, 11.1.2. Back Doors and Trap Doors
- Practical UNIX & Internet Security, 11.5.2.5. .forward, .procmailrc
- Practical UNIX & Internet Security, 11.5.3.3. /usr/lib/aliases, /etc/aliases,
- Practical UNIX & Internet Security, 17.3.4. Simple Mail Transfer Protocol (SMTP) (TCP Port 25)
- Practical UNIX & Internet Security, 17.3.4.3. Improving the security of Berkeley sendmail V8
- Practical UNIX & Internet Security, 24.2.4.2. How to contact the system administrator of a computer
- TCP/IP Network Administration, UNIX Versions
- TCP/IP Network Administration, 4.5.3. Planning Your Mail System
- TCP/IP Network Administration, 10. sendmail
- TCP/IP Network Administration, E.2. The sendmail Command
- (see also mail)
- (see also SMTP)
- aliases
- Practical UNIX & Internet Security, 11.5.3.3. /usr/lib/aliases, /etc/aliases,
- TCP/IP Network Administration, 10.3. sendmail Aliases
- classes, listed
- TCP/IP Network Administration, E.4.1. sendmail Classes
- TCP/IP Network Administration, E.2. The sendmail Command
- compiling
: TCP/IP Network Administration, E.1. Compiling sendmail
- (dis)advantages to
: sendmail, 18.1. To Use or Not to Use
- exit values
: sendmail, 36.5. sendmail's exit() Status
- .forward file
: Practical UNIX & Internet Security, 24.4.1.6. Changes to startup files
- future of
: sendmail, The Future
- history of
- sendmail, History
- sendmail, 27.5. The V Configuration Command
- installing and configuring
- sendmail, 2.1. Get the Source
- sendmail, 18.6. Install sendmail
- sendmail, 18.8. Alphabetized Reference
- TCP/IP Network Administration, 10.5. sendmail Configuration
- internal macros, listed
: TCP/IP Network Administration, 10.5.2. The Define Macro Command
- location of
: sendmail, 36.1. Alternative argv[0] Names
- logging to syslog
: Practical UNIX & Internet Security, 17.3.4.3. Improving the security of Berkeley sendmail V8
- m4 diversions, reserved
: sendmail, 19.1.4. m4 diversions
- mailer flags, listed
: TCP/IP Network Administration, E.4.3. sendmail Mailer Flags
- Morris worm
: Building Internet Firewalls, 8.1. Electronic Mail
- obtaining source code
- sendmail, 2.1. Get the Source
- sendmail, 18.3. Obtain the Source
- options
- sendmail, 13.2. Required Options
- TCP/IP Network Administration, E.4.2. sendmail Options
- pid for
: (see $p macro)
- readying for DNS
: sendmail, 21.1.2. Make sendmail DNS Aware
- restricted shell
: sendmail, 19.6. Alphabetized m4 Macros
- running as a daemon
: TCP/IP Network Administration, 10.2. Running sendmail as a Daemon
- running manually
: sendmail, 1.4. Run sendmail by Hand
- same Internet/NIS domain
: Practical UNIX & Internet Security, 19.4.3. NIS Domains
- security problems with
: Practical UNIX & Internet Security, 17.3.4.1. sendmail and security
- starting operating mode
: sendmail, 31.10. Alphabetized Reference
- Sun Microsystem's enhancements to
: sendmail, D. Sun Enhancements
- testing and debugging arguments
: TCP/IP Network Administration, 10.8. Testing sendmail.cf
- tools reference
: TCP/IP Network Administration, E. A sendmail Reference
- using key files in
: TCP/IP Network Administration, 10.8.2. Using Key Files in sendmail
- using most recent release
- TCP/IP Network Administration, 10.8.2. Using Key Files in sendmail
- TCP/IP Network Administration, E.1. Compiling sendmail
- version of
- Practical UNIX & Internet Security, 17.3.4.1. sendmail and security
- sendmail, UNIX and sendmail Versions
- sendmail, 5.2.1. Version
- sendmail, 18.2. Vendor Versus Compiling
- sendmail, 27.5. The V Configuration Command
- sendmail, 31.10. Alphabetized Reference
- sendmail, D.2. Backward Compatibility
- TCP/IP Network Administration, Preface
- improving Version 8
: Practical UNIX & Internet Security, 17.3.4.3. Improving the security of Berkeley sendmail V8
- "savemail panic" message
: sendmail, 23.3.6. Savemail Panic
- sendmail startup script
: TCP/IP Network Administration, 10.2. Running sendmail as a Daemon
- sendmail.cf configuration file
- Practical UNIX & Internet Security, 17.3.4. Simple Mail Transfer Protocol (SMTP) (TCP Port 25)
- sendmail, 1.3.1. The Configuration File
- sendmail, 3.1. Role in the Filesystem
- sendmail, 5. The sendmail.cf File
- sendmail, 22.4. The Configuration File
- sendmail, 27. The Configuration File
- sendmail, 36.4.4. Fourth: Read the Configuration File
- TCP/IP Network Administration, 10.4. The sendmail.cf File
- TCP/IP Network Administration, 10.4.2. General sendmail.cf Structure
- commands
- sendmail, 5.1. Overview
- TCP/IP Network Administration, 10.5. sendmail Configuration
- define class command (C and F)
: TCP/IP Network Administration, 10.5.3. The Define Class Command
- define macro command (D)
: TCP/IP Network Administration, 10.5.2. The Define Macro Command
- define mail headers command (H)
: TCP/IP Network Administration, 10.5.7. Defining Mail Headers
- define mail precedence command (P)
: TCP/IP Network Administration, 10.5.6. Defining Mail Precedence
- define mailers command (M)
: TCP/IP Network Administration, 10.5.8. Defining Mailers
- define trusted users command (T)
: TCP/IP Network Administration, 10.5.5. Defining Trusted Users
- defining macros in
: sendmail, 31.3. Configuration File Definitions
- freezing
: sendmail, 36.7. Alphabetized Reference
- installing
: sendmail, 15.6. Install the client.cf File
- location of
: sendmail, 36.7. Alphabetized Reference
- modifying
- TCP/IP Network Administration, 10.7. Modifying a sendmail.cf File
- TCP/IP Network Administration, 10.7.1. Modifying Local Information
- TCP/IP Network Administration, 10.7.2. Modifying Options
- options and flags
- sendmail, 34.1.3. Appropriateness of Options
- TCP/IP Network Administration, E.4. More sendmail.cf
- pathname for
: sendmail, 18.8. Alphabetized Reference
- rewrite rules (R, S, and K commands)
- TCP/IP Network Administration, 10.6. Rewriting the Mail Address
- TCP/IP Network Administration, 10.6.1. Pattern Matching
- TCP/IP Network Administration, 10.6.2. Transforming the Address
- rule-testing mode and
: sendmail, 38.2. Configuration Lines
- sample of, locating
: TCP/IP Network Administration, 10.4.1. Locating a Sample sendmail.cf File
- set option command (O)
: TCP/IP Network Administration, 10.5.4. The Set Option Command
- structure of
: TCP/IP Network Administration, 10.4.2. General sendmail.cf Structure
- testing
- sendmail, 15.1. Test the Configuration File
- TCP/IP Network Administration, 10.8. Testing sendmail.cf
- commands, listed
: TCP/IP Network Administration, 10.8.1. Testing Rewrite Rules
- rewrite rules
: TCP/IP Network Administration, 10.8.1. Testing Rewrite Rules
- troubleshooting
: sendmail, 27.6. Pitfalls
- version level command (V)
: TCP/IP Network Administration, 10.5.1. The Version Level Command
- sendmail.ct file
: sendmail, 19.6. Alphabetized m4 Macros
- sendmail.cw file
: sendmail, 19.6. Alphabetized m4 Macros
- sendmail.pid file, pathname for
: sendmail, 18.8. Alphabetized Reference
- sendmail.st file
: sendmail, 26.2.1. The sendmail.st File
- sendmail.tar file
: TCP/IP Network Administration, 10.4.1. Locating a Sample sendmail.cf File
- sendmailvars file
: sendmail, D.4. L and G Configuration Commands
- "sendmailvars:" header line
: sendmail, D.4. L and G Configuration Commands
- SendMimeErrors (j) option
: sendmail, 34.8. Alphabetized Reference
- sensors
: (see detectors)
- separation of duties
: Practical UNIX & Internet Security, 13.2.5. Least Privilege and Separation of Duties
- sequence database class
: sendmail, 33.8. Alphabetized Reference
- Sequence Number field
: TCP/IP Network Administration, 1.6.2. Transmission Control Protocol
- sequence of commands
: Practical UNIX & Internet Security, 23.2. Tips on Avoiding Security-related Bugs
- serial
- communications packages
: TCP/IP Network Administration, 6.4.4. Troubleshooting Serial Connections
- devices, adding manually
: TCP/IP Network Administration, 6.4.4. Troubleshooting Serial Connections
- interfaces
- Practical UNIX & Internet Security, 14.2. Serial Interfaces
- TCP/IP Network Administration, 6.2. TCP/IP Over a Serial Line
- lines
- load balancing
: TCP/IP Network Administration, 5.2. Linux Kernel Configuration
- multiple, using simultaneously
: TCP/IP Network Administration, 5.2. Linux Kernel Configuration
- protocols
- choosing
- TCP/IP Network Administration, 6.2.2. Choosing a Serial Protocol
- TCP/IP Network Administration, A.1.1. The dip Script File
- debugging
: TCP/IP Network Administration, 6.4.4. Troubleshooting Serial Connections
- Serial Line Internet Protocol (SLIP)
: Practical UNIX & Internet Security, 14.5. Modems and UNIX
- Serial Line IP (SLIP)
- Practical UNIX & Internet Security, 14.5. Modems and UNIX
- Practical UNIX & Internet Security, 16.2. IPv4: The Internet Protocol Version 4
- TCP/IP Network Administration, 1.7. Application Layer
- TCP/IP Network Administration, 5.2. Linux Kernel Configuration
- TCP/IP Network Administration, 5.3.1.2. Pseudo-device
- TCP/IP Network Administration, 6.2.1. The Serial Protocols
- (see also PLIP (Parallel Line IP))
- END character
: TCP/IP Network Administration, 6.2.1. The Serial Protocols
- ESC character
: TCP/IP Network Administration, 6.2.1. The Serial Protocols
- installing
: TCP/IP Network Administration, 6.4. Installing SLIP
- server configuration
: TCP/IP Network Administration, 6.4.3. SLIP Server Configuration
- serial numbers, logging
: Practical UNIX & Internet Security, 10.7.1.2. Informational material
- SERT (Security Emergency Response Team)
: Practical UNIX & Internet Security, F.3.4.4. Australia: Internet .au domain
- server-side includes
- Practical UNIX & Internet Security, 18.2.2.2. Additional configuration issues
- Practical UNIX & Internet Security, 18.3.2. Commands Within the <Directory>
- servers
- Practical UNIX & Internet Security, 16.2.5. Clients and Servers
- Practical UNIX & Internet Security, 17.1. Understanding UNIX Internet Servers
- Practical UNIX & Internet Security, 17.1.3. The /etc/inetd Program
- TCP/IP Network Administration, 1.7. Application Layer
- (see also remote, servers)
- Archie, running
: Building Internet Firewalls, 8.7.3.4. Running an Archie server
- backing up
: Practical UNIX & Internet Security, 7.2.2. Small Network of Workstations and a Server
- caching servers
- sendmail, 21.1. Overview
- TCP/IP Network Administration, 11.6.2. The data is here and the server can't find it!
- checklist for bringing up
: Practical UNIX & Internet Security, 17.4. Security Implications of Network Services
- command
: TCP/IP Network Administration, 8.4. Using nslookup
- configuration statement
: TCP/IP Network Administration, B.8.10. The routerdiscovery Statement
- controlling access to
: Practical UNIX & Internet Security, 17.2. Controlling Access to Servers
- DNS
- for internal hosts
: Building Internet Firewalls, 8.10.5.2. Set up a real DNS
- setting up fake
: Building Internet Firewalls, 8.10.5.1. Set up a `fake'
- ftp
: (see FTP)
- http
: (see http server)
- load shedding
: Practical UNIX & Internet Security, 23.3. Tips on Writing Network Programs
- local
: sendmail, 19.6. Alphabetized m4 Macros
- master/slave
- TCP/IP Network Administration, 8.1.1. BIND Configurations
- (see also NIS)
- multiple
: TCP/IP Network Administration, 9.1.4. NFS Automounter
- name servers
: sendmail, 21.1. Overview
- NIS+, security levels of
: Practical UNIX & Internet Security, 19.5.5. NIS+ Limitations
- offsite
: sendmail, 21.5.2. Offsite Servers
- overloading with requests
: Practical UNIX & Internet Security, 25.3.1. Service Overloading
- program, pathname of
: TCP/IP Network Administration, 5.4. The Internet Daemon
- proxy
: (see proxy servers/services)
- routed
: Building Internet Firewalls, 5.8.2.4. Which services should you disable?
- setting up for FTP
- Practical UNIX & Internet Security, 17.3.2.4. Setting up an FTP server
- Practical UNIX & Internet Security, 17.3.2.6. Setting up anonymous FTP with the standard UNIX FTP
- web
: (see web servers)
- WN
: Practical UNIX & Internet Security, 18.3. Controlling Access to Files on Your Server
- Xauthority
: Practical UNIX & Internet Security, 17.3.21.4. Using Xauthority magic cookies
- services
: (see network services)
- service-list
: TCP/IP Network Administration, 12.5.1.1. tcpd access control files
- services file
- Practical UNIX & Internet Security, 17.1.1. The /etc/services File
- TCP/IP Network Administration, 5.4. The Internet Daemon
- TCP/IP Network Administration, 9.3. Network Information Service
- TCP/IP Network Administration, 9.4. A BOOTP Server
- TCP/IP Network Administration, 9.7.1. POP Server
- TCP/IP Network Administration, 9.7.2. IMAP Server
- services host
: Building Internet Firewalls, 9.2. Screened Host Architecture
- Services table (NIS+)
: Practical UNIX & Internet Security, 19.5.3. NIS+ Tables
- ServiceSwitchFile option
- sendmail, 21.2.3. Look Up Addresses for Delivery
- sendmail, 24.1.1. The aliases(5) file's location
- sendmail, 34.8. Alphabetized Reference
- SESAME (Secure European System for Applications in a Multivendor Environment)
: Practical UNIX & Internet Security, 19.7.2. SESAME
- session
- hijacking
: Practical UNIX & Internet Security, 17.3.3. TELNET (TCP Port 23)
- IDs
- Practical UNIX & Internet Security, 4.3.3. Other IDs
- Practical UNIX & Internet Security, C.1.3.4. Process groups and sessions
- keys
- Practical UNIX & Internet Security, 6.4. Common Cryptographic Algorithms
- Practical UNIX & Internet Security, 19.3.1.1. Proving your identity
- Session Layer
: TCP/IP Network Administration, 1.2. A Data Communications Model
- set debug command
: TCP/IP Network Administration, 8.4. Using nslookup
- set domain command
: TCP/IP Network Administration, 8.4. Using nslookup
- set ruleset (S) command
: TCP/IP Network Administration, 10.6.3. The Set Ruleset Command
- set type command
: TCP/IP Network Administration, 11.6.4. dig: An Alternative to nslookup
- seteuid, setreuid routines
: sendmail, 22.1.1. Test seteuid and setreuid
- setgid capability
- Building Internet Firewalls, 5.3.1. What Operating System?
- Practical UNIX & Internet Security, 4.3.3. Other IDs
- Practical UNIX & Internet Security, 23.4. Tips on Writing SUID/SGID Programs
- TCP/IP Network Administration, 12.4.2.1. Checking files
- (see also SUID/SGID programs)
- setpgrp function
: Practical UNIX & Internet Security, C.1.3.4. Process groups and sessions
- setrlimit function
: Practical UNIX & Internet Security, 23.2. Tips on Avoiding Security-related Bugs
- setsid function
: Practical UNIX & Internet Security, C.1.3.4. Process groups and sessions
- setuid
- Building Internet Firewalls, 5.3.1. What Operating System?
- Practical UNIX & Internet Security, 23.4. Tips on Writing SUID/SGID Programs
- TCP/IP Network Administration, 9.1.3.2. The vfstab and fstab files
- (see also SUID/SGID programs)
- setuid file
: Practical UNIX & Internet Security, 4.3.1. Real and Effective UIDs
- SevenBitInput (7) option
: sendmail, 34.8. Alphabetized Reference
- severity level, warning
- sendmail, 26.1.1. syslog(3)
- sendmail, 26.1.2. Tuning syslog.conf
- SGID bit
- Practical UNIX & Internet Security, 5.5.1. SUID, SGID, and Sticky Bits
- Practical UNIX & Internet Security, 5.5.7. SGID Bit on Files (System V UNIX Only): Mandatory
- (see also SUID/SGID programs)
- clearing with chown
: Practical UNIX & Internet Security, 5.7. chown: Changing a File's Owner
- on directories
: Practical UNIX & Internet Security, 5.5.6. SGID and Sticky Bits on Directories
- on files
: Practical UNIX & Internet Security, 5.5.7. SGID Bit on Files (System V UNIX Only): Mandatory
- SGID files
: Practical UNIX & Internet Security, B.3.2.2. SGID files
- sh (Bourne shell)
- Practical UNIX & Internet Security, 5.5.3.2. Another SUID example: IFS and the /usr/lib/preserve
- Practical UNIX & Internet Security, 11.5.1. Shell Features
- Practical UNIX & Internet Security, C.5.3. Running the User's Shell
- SUID and
- Practical UNIX & Internet Security, 5.5.2. Problems with SUID
- (see also shells)
- SHA (Secure Hash Algorithm)
- Practical UNIX & Internet Security, 6.5.3. Digital Signatures
- Practical UNIX & Internet Security, 6.5.4.2. SHA
- shadow file
- Practical UNIX & Internet Security, 8.1.1. Accounts Without Passwords
- Practical UNIX & Internet Security, 8.8.5. Shadow Password Files
- TCP/IP Network Administration, 12.2.1. The Shadow Password File
- shadow passwords
- Practical UNIX & Internet Security, 3.2.1. The /etc/passwd File
- Practical UNIX & Internet Security, 8.4.1. Changing an Account's Password
- Practical UNIX & Internet Security, 8.8.5. Shadow Password Files
- Shamir, Adi
- Practical UNIX & Internet Security, 6.4.2. Summary of Public Key Systems
- Practical UNIX & Internet Security, 6.4.6. RSA and Public Key Cryptography
- shar format file
: Practical UNIX & Internet Security, 11.1.4. Trojan Horses
- share command
- TCP/IP Network Administration, 9.1.2.1. The share command
- TCP/IP Network Administration, 9.1.5. NFS Authentication Server
- shareware
: Practical UNIX & Internet Security, 27.2.2. Viruses on the Distribution Disk
- sharing
- directories
: TCP/IP Network Administration, 9.1. The Network File System
- filesystems
: TCP/IP Network Administration, 9.1.2. Sharing Filesystems
- sharp sign (#)
: Practical UNIX & Internet Security, 6.5.1. Message Digests
- for comments
- sendmail, 5.1. Overview
- sendmail, 5.2.2. Comments
- sendmail, 27.2. Comments
- sendmail, 38.2. Configuration Lines
- TCP/IP Network Administration, 3.2. The Host Table
- TCP/IP Network Administration, 5.4. The Internet Daemon
- TCP/IP Network Administration, 7.7.1.1. A host configuration
- TCP/IP Network Administration, 9.1.4. NFS Automounter
- TCP/IP Network Administration, 9.2.1. The printcap File
- TCP/IP Network Administration, 9.4. A BOOTP Server
- TCP/IP Network Administration, A.1.1. The dip Script File
- TCP/IP Network Administration, D.3. The dhcpd.conf Configuration File
- disabling services with
: Practical UNIX & Internet Security, 17.3. Primary UNIX Network Services
- in :include: lists
: sendmail, 25.2.1. Comments in :include: Lists
- lines in sendmail.cf
: sendmail, 3.1. Role in the Filesystem
- in m4 files
: sendmail, 19.5. Pitfalls
- shell escapes
- Practical UNIX & Internet Security, 8.1.3. Accounts That Run a Single Command
- Practical UNIX & Internet Security, 8.1.4.6. Potential problems with rsh
- in L.cmds list
: Practical UNIX & Internet Security, 15.4.3. L.cmds: Providing Remote Command Execution
- shell scripts
- Building Internet Firewalls, 5.8.2.1. How are services managed?
- Practical UNIX & Internet Security, 5.5.3. SUID Shell Scripts
- Practical UNIX & Internet Security, 5.5.3.2. Another SUID example: IFS and the /usr/lib/preserve
- TCP/IP Network Administration, 12.4.2.1. Checking files
- shells
- Practical UNIX & Internet Security, 1.2. What Is an Operating System?
- Practical UNIX & Internet Security, 3.2.1. The /etc/passwd File
- Practical UNIX & Internet Security, 11.1.4. Trojan Horses
- Practical UNIX & Internet Security, 11.5.1. Shell Features
- Practical UNIX & Internet Security, 11.5.1.4. Filename attacks
- Practical UNIX & Internet Security, C.2. Creating Processes
- Practical UNIX & Internet Security, C.5.3. Running the User's Shell
- changing
- Practical UNIX & Internet Security, 8.4.2. Changing the Account's Login
- Practical UNIX & Internet Security, 8.7.1. Integrating One-time Passwords with UNIX
- history files
: Practical UNIX & Internet Security, 10.4.1. Shell History
- one-command accounts
: Practical UNIX & Internet Security, 8.1.3. Accounts That Run a Single Command
- restricted (rsh, ksh)
- Practical UNIX & Internet Security, 8.1.4.1. Restricted shells under System V UNIX
- Practical UNIX & Internet Security, 8.1.4.6. Potential problems with rsh
- UUCP
: (see uucico program)
- shells file
- Practical UNIX & Internet Security, 8.4.2. Changing the Account's Login
- sendmail, 18.8. Alphabetized Reference
- sendmail, 22.8.4. The /etc/shells file
- sendmail, D.1. Sun Enhancements
- Shimomura, Tsutomu
: Practical UNIX & Internet Security, 23.3. Tips on Writing Network Programs
- shoulder surfing
- Practical UNIX & Internet Security, 3.2.4. Passwords Are a Shared Secret
- Practical UNIX & Internet Security, 5.5.2. Problems with SUID
- show queue mode
: sendmail, 4.1.2. Show Queue Mode (-bp)
- showmount command
- TCP/IP Network Administration, 4.5.1. File servers
- TCP/IP Network Administration, 9.1.3. Mounting Remote Filesystems
- showq command (SMTP)
: sendmail, 22.3.1. SMTP debug
- shredders
: Practical UNIX & Internet Security, 12.3.3. Other Media
- SHTTP
: (see Secure HTTP)
- shutdowns and wtmp file
: Practical UNIX & Internet Security, 10.1.3. last Program
- shutting down
- Building Internet Firewalls, 13.1.2. Disconnect or Shut Down, as
- Building Internet Firewalls, 13.4.3. Planning for Disconnecting or
- SIGHUP signal
- Practical UNIX & Internet Security, C.4. The kill Command
- TCP/IP Network Administration, 9.4. A BOOTP Server
- TCP/IP Network Administration, 11.6.3. Cache corruption
- TCP/IP Network Administration, A.2. The PPP Daemon
- TCP/IP Network Administration, A.2.1. Signal processing
- TCP/IP Network Administration, B.1.1. Signal Processing
- TCP/IP Network Administration, C.1.1. Signal Processing
- SIGINT signal
- TCP/IP Network Administration, 11.6.3. Cache corruption
- TCP/IP Network Administration, A.2.1. Signal processing
- TCP/IP Network Administration, B.1.1. Signal Processing
- TCP/IP Network Administration, C.1.1. Signal Processing
- SIGKILL signal
: Practical UNIX & Internet Security, C.4. The kill Command
- Signal Ground (SG)
: Practical UNIX & Internet Security, 14.3. The RS-232 Serial Protocol
- signals
- Practical UNIX & Internet Security, C.3. Signals
- sendmail, 26.3. Signaling the Daemon
- grounding
: Practical UNIX & Internet Security, 25.3.3. Signal Grounding
- processing
- TCP/IP Network Administration, A.2.1. Signal processing
- TCP/IP Network Administration, B.1.1. Signal Processing
- TCP/IP Network Administration, C.1.1. Signal Processing
- signatures, digital
- Practical UNIX & Internet Security, 6.4. Common Cryptographic Algorithms
- Practical UNIX & Internet Security, 6.5. Message Digests and Digital Signatures
- Practical UNIX & Internet Security, 6.5.5.2. Message authentication codes
- Practical UNIX & Internet Security, 9.2. Detecting Change
- Practical UNIX & Internet Security, 9.2.3. Checksums and Signatures
- TCP/IP Network Administration, 12.6. Encryption
- checksums
- Building Internet Firewalls, 5.8.5.3. About checksums for auditing
- Practical UNIX & Internet Security, 6.5.5.1. Checksums
- Practical UNIX & Internet Security, 9.2.3. Checksums and Signatures
- TCP/IP Network Administration, 1.6.2. Transmission Control Protocol
- TCP/IP Network Administration, 11.8. Protocol Case Study
- keeping secure
: Building Internet Firewalls, 13.5.3. Keeping Secured Checksums
- recalculating
- TCP/IP Network Administration, 4.2.1. Obtaining an IP Address
- TCP/IP Network Administration, 5.3.1.1. Options
- using Tripwire for
: Building Internet Firewalls, 5.8.5.1. Auditing packages
- detached signatures
: Practical UNIX & Internet Security, 6.6.3.6. PGP detached signatures
- with PGP
: Practical UNIX & Internet Security, 6.6.3.4. Adding a digital signature to an announcement
- SIGSTOP signal
: Practical UNIX & Internet Security, C.4. The kill Command
- SIGTERM signal
- Practical UNIX & Internet Security, 25.2.1.1. Too many processes
- TCP/IP Network Administration, B.1.1. Signal Processing
- TCP/IP Network Administration, D.2. The dhcpd Command
- silently discarding datagrams
: (see datagrams)
- SILO overflows
: TCP/IP Network Administration, 6.1.5.4. Maximum transmission unit
- Simple Gateway Management Protocol (SGMP)
: TCP/IP Network Administration, 11.9. Simple Network Management Protocol
- Simple Mail Transfer Protocol
: (see SMTP)
- Simple Network Management Protocol
: (see SNMP)
- single-character options
: (see options, sendmail)
- single-purpose routers
: Building Internet Firewalls, 6.8.2. It Can Be a Single-Purpose Router or
- single quotation marks (` and ')
: sendmail, 19.1.1. m4 is greedy
- single threaded mail deliver
: TCP/IP Network Administration, E.3.1. define
- single-user mode
: Practical UNIX & Internet Security, C.5.1. Process #1: /etc/init
- SingleLineFromHeader option
- sendmail, 18.8. Alphabetized Reference
- sendmail, 34.8. Alphabetized Reference
- SingleThreadDelivery option
- sendmail, 34.1.3. Appropriateness of Options
- sendmail, 34.8. Alphabetized Reference
- SITE macro (m4)
: sendmail, 19.6. Alphabetized m4 Macros
- SITECONFIG macro (m4)
: sendmail, 19.4.6. UUCP
- size
- determining free disk space
: sendmail, 18.8. Alphabetized Reference
- df file
: sendmail, 23.4. Printing the Queue
- guest messages
: sendmail, 20.2.3. Limit the Size of Guest Messages
- messages
- sendmail, 26.1.3.10. size= the size of the message
- sendmail, 30.4. The Equates
- sendmail, 34.8. Alphabetized Reference
- prescan buffer
: sendmail, 18.8. Alphabetized Reference
- queue
: sendmail, 18.8. Alphabetized Reference
- setting maxima
: sendmail, 18.8. Alphabetized Reference
- syslog buffers
: sendmail, 18.8. Alphabetized Reference
- SIZE keyword (ESMTP)
: sendmail, 34.8. Alphabetized Reference
- size= equate (syslog output)
: sendmail, 26.1.3.10. size= the size of the message
- Skipjack algorithm
: Practical UNIX & Internet Security, 6.4.1. Summary of Private Key Systems
- Slackware 96
: TCP/IP Network Administration, 4.7. netconfig
- slash (/)
- / flag
: sendmail, 30.8. Alphabetized F= Flags
- character in alias
- sendmail, 24.2.2. Delivery to Files
- sendmail, 25.7.3. Appending to Files
- IFS separator
: Practical UNIX & Internet Security, 11.5.1.2. IFS attacks
- root directory
- Practical UNIX & Internet Security, 5.1.1. Directories
- (see also root directory)
- slattach command
: TCP/IP Network Administration, 6.4.1. slattach
- slave command
: TCP/IP Network Administration, C.2. named.boot Configuration Commands
- Slave mode (uucico)
: Practical UNIX & Internet Security, 15.1.4. How the UUCP Commands Work
- slave server
- Practical UNIX & Internet Security, 19.4. Sun's Network Information Service (NIS)
- (see also NIS)
- SLIP (Serial Line Internet Protocol)
- Practical UNIX & Internet Security, 14.5. Modems and UNIX
- Practical UNIX & Internet Security, 16.2. IPv4: The Internet Protocol Version 4
- TCP/IP Network Administration, 1.7. Application Layer
- TCP/IP Network Administration, 5.2. Linux Kernel Configuration
- TCP/IP Network Administration, 5.3.1.2. Pseudo-device
- TCP/IP Network Administration, 6.2.1. The Serial Protocols
- END character
: TCP/IP Network Administration, 6.2.1. The Serial Protocols
- ESC character
: TCP/IP Network Administration, 6.2.1. The Serial Protocols
- installing
: TCP/IP Network Administration, 6.4. Installing SLIP
- server configuration
: TCP/IP Network Administration, 6.4.3. SLIP Server Configuration
- slocal program
: sendmail, 25.7.5.3. The slocal program
- slow convergence
: TCP/IP Network Administration, 7.4.1.1. Running RIP with routed
- Smail3.x
: sendmail, 18.1. To Use or Not to Use
- Small Business Community Nationwide (SBA CERT)
: Practical UNIX & Internet Security, F.3.4.31. Small Business Association
- smap package
- Building Internet Firewalls, 8.1.1.3. Improving SMTP
- Practical UNIX & Internet Security, 17.3.4.1. sendmail and security
- smart cards, firewalls
: Practical UNIX & Internet Security, 21.5. Special Considerations
- smart hosts
- sendmail, 19.6. Alphabetized m4 Macros
- sendmail, 29.6.4. Forwarding to a Knowledgeable Host
- sendmail, 31.10. Alphabetized Reference
- SMART_HOST macro (m4)
- sendmail, 19.6. Alphabetized m4 Macros
- sendmail, 31.10. Alphabetized Reference
- SMI (Structure of Management Information)
: TCP/IP Network Administration, 11.9. Simple Network Management Protocol
- smit tool
: Practical UNIX & Internet Security, 8.8.2. Constraining Passwords
- smoke and smoking
: Practical UNIX & Internet Security, 12.2.1.2. Smoke
- smrsh program
- sendmail, 19.6. Alphabetized m4 Macros
- sendmail, 22.8.2. The smrsh Program
- SMTP (Simple Mail Transfer Protocol)
- Building Internet Firewalls, 2.1. Electronic Mail
- Building Internet Firewalls, 5.6. Selecting Services Provided by the
- Building Internet Firewalls, 7.5. Proxying Without a Proxy Server
- Building Internet Firewalls, 8.1.1. Simple Mail Transfer Protocol
- Practical UNIX & Internet Security, 17.3.4. Simple Mail Transfer Protocol (SMTP) (TCP Port 25)
- Practical UNIX & Internet Security, 17.3.4.3. Improving the security of Berkeley sendmail V8
- sendmail, 4.2. Verbose (-v)
- sendmail, 18.8. Alphabetized Reference
- TCP/IP Network Administration, 1.7. Application Layer
- TCP/IP Network Administration, 3.4.1. Simple Mail Transfer Protocol
- commands, listed
: TCP/IP Network Administration, 3.4.1. Simple Mail Transfer Protocol
- configuring
- firewalls and
: Building Internet Firewalls, 8.1.1.6. Configuring SMTP to
- in screened host architecture
: Building Internet Firewalls, 9.2.1.3. SMTP
- in screened subnet architecture
: Building Internet Firewalls, 9.1.1.3. SMTP
- EHLO command
- sendmail, 4.2. Verbose (-v)
- sendmail, 34.8. Alphabetized Reference
- ESMTP (Extended SMTP)
- TCP/IP Network Administration, 3.4.3. Multipurpose Internet Mail Extensions
- TCP/IP Network Administration, 10.8. Testing sendmail.cf
- private extensions to
: TCP/IP Network Administration, 3.4.3. Multipurpose Internet Mail Extensions
- ETRN command
: sendmail, 23.6.2.4. Process the queue via ESMTP ETRN
- EXPN command
- sendmail, 22.3.2. SMTP vrfy and expn
- sendmail, 22.8.3.5. The PrivacyOptions option
- Extended
: (see ESMTP)
- forging mail with
: sendmail, 22.7.2. Forging with SMTP
- greeting message
: sendmail, 31.10. Alphabetized Reference
- HELO command
- sendmail, 18.8. Alphabetized Reference
- sendmail, 30.8. Alphabetized F= Flags
- sendmail, 34.8. Alphabetized Reference
- incoming connection rate
: sendmail, 34.8. Alphabetized Reference
- MAIL command
- sendmail, 29.10.1. The check_mail Rule Set
- sendmail, 34.8. Alphabetized Reference
- multiple connections
: sendmail, 34.8. Alphabetized Reference
- multiple timeouts
: sendmail, 34.8. Alphabetized Reference
- RCPT command
- sendmail, 23.9. The qf File Internals
- sendmail, 29.10.2. The check_rcpt Rule Set
- sendmail, 36.7. Alphabetized Reference
- refusing on high load
: sendmail, 34.8. Alphabetized Reference
- running on stdin
: sendmail, 36.7. Alphabetized Reference
- sendmail and
: TCP/IP Network Administration, 10.1. sendmail's Function
- service extensions to
: TCP/IP Network Administration, 3.4.3. Multipurpose Internet Mail Extensions
- SMTP probes
: sendmail, 22.3. SMTP Probes
- standardizing on
: TCP/IP Network Administration, 4.5.3. Planning Your Mail System
- status codes
: sendmail, B.1. Status file lines
- for UNIX
: (see Sendmail)
- VRFY command
- sendmail, 22.3.2. SMTP vrfy and expn
- sendmail, 22.8.3.5. The PrivacyOptions option
- sendmail, 30.8. Alphabetized F= Flags
- smtpd daemon
: sendmail, 36.1.5. smtpd
- SMTPDEBUG macro
- sendmail, 18.8. Alphabetized Reference
- sendmail, 22.3.1. SMTP debug
- SmtpGreetingMessage option
- sendmail, 31.10. Alphabetized Reference
- sendmail, 34.8. Alphabetized Reference
- SMTPLINELIM macro
: sendmail, 18.8. Alphabetized Reference
- SNA (System Network Architecture)
: Practical UNIX & Internet Security, 16.4.2. SNA
- snapshots, system
- Building Internet Firewalls, 13.1.5. Snapshot the System
- Building Internet Firewalls, 13.4.5. Planning for Snapshots
- SNEFRU algorithm
: Practical UNIX & Internet Security, 6.5.4.4. SNEFRU
- sniffing
- Building Internet Firewalls, 1.2.1.3. Information Theft
- Building Internet Firewalls, 10.1.2. Packet Sniffing
- Building Internet Firewalls, 10.3.1. One-Time Passwords
- Practical UNIX & Internet Security, 1.4.3. Add-On Functionality Breeds Problems
- Practical UNIX & Internet Security, 3. Users and Passwords
- Practical UNIX & Internet Security, 8.7. One-Time Passwords
- Practical UNIX & Internet Security, 17.3.3. TELNET (TCP Port 23)
- (see also eavesdropping)
- network
: Practical UNIX & Internet Security, 16.3. IP Security
- packet
- Building Internet Firewalls, 10.1.2. Packet Sniffing
- Practical UNIX & Internet Security, 16.3.1. Link-level Security
- Practical UNIX & Internet Security, 17.3.3. TELNET (TCP Port 23)
- SNK-004 card, TIS FWTK
: Building Internet Firewalls, 10.3.3. Challenge-Response Schemes
- SNMP (Simple Network Management Protocol)
- Building Internet Firewalls, 2.10. Network Management Services
- Practical UNIX & Internet Security, 17.3.15. Simple Network Management Protocol (SNMP) (UDP Ports
- TCP/IP Network Administration, 11.9. Simple Network Management Protocol
- configuring
: Building Internet Firewalls, 8.12.1. Simple Network Management
- statement (in gated)
: TCP/IP Network Administration, B.8.7. The snmp Statement
- snoop
- Practical UNIX & Internet Security, 24.2.3. Monitoring the Intruder
- TCP/IP Network Administration, 11.2. Diagnostic Tools
- TCP/IP Network Administration, 11.7. Analyzing Protocol Problems
- detailed analysis with
: TCP/IP Network Administration, 11.3. Testing Basic Connectivity
- snuffle program
: Building Internet Firewalls, 5.8.2.2. How to disable services
- SOA records
- sendmail, 15.3. MX Records
- TCP/IP Network Administration, 8.3.2. Standard Resource Records
- TCP/IP Network Administration, 8.3.4. The named.local File
- TCP/IP Network Administration, 8.3.5. The Reverse Domain File
- TCP/IP Network Administration, 8.3.6. The named.hosts File
- TCP/IP Network Administration, 11.6.1. Some systems work, others don't
- TCP/IP Network Administration, C.3.1.1. Start of Authority record
- socket
- Building Internet Firewalls, C.12.3. Sockets
- TCP/IP Network Administration, 1.2. A Data Communications Model
- TCP/IP Network Administration, 2.7.3. Sockets
- pairs
: TCP/IP Network Administration, 2.7.3. Sockets
- types of
: TCP/IP Network Administration, 5.4. The Internet Daemon
- SOCKS package
- Building Internet Firewalls, 7.6. Using SOCKS for
- Building Internet Firewalls, B.4.2. SOCKS
- Practical UNIX & Internet Security, E.4.8. SOCKS
- TCP/IP Network Administration, 12.7.1. Functions of the firewall
- (see proxy servers/services)
- functions
: Building Internet Firewalls, 7.6. Using SOCKS for
- HTTP proxying on
- in screened subnet architecture
: Building Internet Firewalls, 9.1.1.5. HTTP
- modified finger service
: Building Internet Firewalls, 8.8.1.2. Proxying characteristics of finger
- soft disk quotas
: Practical UNIX & Internet Security, 25.2.2.5. Using quotas
- software
- to automatically monitor the system
: Building Internet Firewalls, 5.9.2. Consider Writing Software to Automate Monitoring
- for backups
- Practical UNIX & Internet Security, 7.4. Software for Backups
- Practical UNIX & Internet Security, 7.4.7. inode Modification Times
- for checking integrity
: Practical UNIX & Internet Security, 19.5.5. NIS+ Limitations
- checking new
- Practical UNIX & Internet Security, 8.1.5.2. Checking new software
- Practical UNIX & Internet Security, 11.1.2. Back Doors and Trap Doors
- consistency of
: Practical UNIX & Internet Security, 2.1. Planning Your Security Needs
- distributing
: (see FTP)
- exporting
: Practical UNIX & Internet Security, 26.4.1. Munitions Export
- failure of
: Practical UNIX & Internet Security, 7.1.1.1. A taxonomy of computer failures
- hacker challenges
: Practical UNIX & Internet Security, 27.2.4. Hacker Challenges
- installing on machine
: Building Internet Firewalls, 5.8.4. Reconfiguring for Production
- keeping updated
: TCP/IP Network Administration, 12.3.2. Keep Software Updated
- logic bombs
: Practical UNIX & Internet Security, 11.1.3. Logic Bombs
- outdated, security problems with
: TCP/IP Network Administration, 12.2. User Authentication
- patches for, logging
: Practical UNIX & Internet Security, 10.7.2.2. Informational material
- patents
: Practical UNIX & Internet Security, 6.7.1. Cryptography and the U.S. Patent System
- proxying
- Building Internet Firewalls, 4.1.2. Proxy Services
- Building Internet Firewalls, 7.1.2.1. Proxy services lag behind nonproxied services
- Building Internet Firewalls, 7.2. How Proxying Works
- (see also proxy servers/services)
- quality of
- Practical UNIX & Internet Security, 1.4.2. Software Quality
- Practical UNIX & Internet Security, 1.4.3. Add-On Functionality Breeds Problems
- removing unnecessary
: TCP/IP Network Administration, 12.3.1. Remove Unnecessary Software
- router
: (see routers and routing)
- stolen (pirated)
- Practical UNIX & Internet Security, 17.3.2.6. Setting up anonymous FTP with the standard UNIX FTP
- Practical UNIX & Internet Security, 26.4.2.1. Software piracy and the SPA
- stored via FTP
: Practical UNIX & Internet Security, 17.3.2.6. Setting up anonymous FTP with the standard UNIX FTP
- testing
: Practical UNIX & Internet Security, 1.4.2. Software Quality
- vendor license agreements
: Practical UNIX & Internet Security, 18.5.2. Trusting Your Software Vendor
- viruses
- Building Internet Firewalls, 1.4.2.4. A firewall can't protect against
- Practical UNIX & Internet Security, 11.1.5. Viruses
- worms
: Practical UNIX & Internet Security, 11.1.6. Worms
- software error
: sendmail, 36.5.7. EX_SOFTWARE An Internal Software Error
- Software Publishers Association (SPA)
: Practical UNIX & Internet Security, 26.4.2.1. Software piracy and the SPA
- Software Security Response Team (SSRT)
: Practical UNIX & Internet Security, F.3.4.9. DEC (Digital Equipment Corporation)
- Solaris systems
- Practical UNIX & Internet Security, 1.3. History of UNIX
- Practical UNIX & Internet Security, 8.7.1. Integrating One-time Passwords with UNIX
- sendmail, 18.8. Alphabetized Reference
- sendmail, D. Sun Enhancements
- TCP/IP Network Administration, UNIX Versions
- TCP/IP Network Administration, 2.5. The Routing Table
- TCP/IP Network Administration, 2.7.1. Protocol Numbers
- TCP/IP Network Administration, 3.4.3. Multipurpose Internet Mail Extensions
- TCP/IP Network Administration, 3.5.1. Reverse Address Resolution Protocol
- TCP/IP Network Administration, 5.1. Kernel Configuration
- TCP/IP Network Administration, 10.2. Running sendmail as a Daemon
- /etc/logindevperm
: Practical UNIX & Internet Security, 17.3.21.1. /etc/fbtab and /etc/logindevperm
- ifconfig command on
- TCP/IP Network Administration, 6.1.2. Checking the Interface with ifconfig
- TCP/IP Network Administration, 6.1.5.3. Metric
- Line Printer (LP) print service in
: TCP/IP Network Administration, 9.2.2. Solaris Line Printer Service
- process limit
: Practical UNIX & Internet Security, 25.2.1.1. Too many processes
- remounting filesystems on
: TCP/IP Network Administration, 9.1.3.2. The vfstab and fstab files
- Secure RPC time window
: Practical UNIX & Internet Security, 19.3.1.3. Setting the window
- sharing directories on
: TCP/IP Network Administration, 9.1.2.1. The share command
- obtaining information about
: TCP/IP Network Administration, 9.1.3. Mounting Remote Filesystems
- /var/adm/loginlog file
: Practical UNIX & Internet Security, 10.1.4. loginlog File
- wtmpx file
: Practical UNIX & Internet Security, 10.1.2. utmp and wtmp Files
- sorting by priority
: (see priority, message)
- sorting queue
- sendmail, 34.8. Alphabetized Reference
- (see also queue)
- sortlist command, in resolv.conf
: TCP/IP Network Administration, 8.2.1. The Resolver Configuration File
- source address
: Building Internet Firewalls, 6.6.1. Risks of Filtering by Source
- source code
- db library package
: sendmail, C.2. Get the Source
- keeping secret
: Practical UNIX & Internet Security, 2.5. The Problem with Security Through Obscurity
- obtaining (sendmail)
- sendmail, 2.1. Get the Source
- sendmail, 18.3. Obtain the Source
- Source Code Control System (SCCS)
- Practical UNIX & Internet Security, 7.3.2. Building an Automatic Backup System
- TCP/IP Network Administration, 10.4.1.1. Building a sendmail.cf with m4 macros
- source port
- filtering by
: Building Internet Firewalls, 6.7.4. Risks of Filtering by Source
- number
- TCP/IP Network Administration, 1.6.1. User Datagram Protocol
- TCP/IP Network Administration, 1.6.2. Transmission Control Protocol
- Source Quench Message
: TCP/IP Network Administration, 1.5.2. Internet Control Message Protocol
- source routing
- Building Internet Firewalls, 5.8.2.5. Turning off routing
- Building Internet Firewalls, 6.3.2.1. IP options
- sendmail, 18.8. Alphabetized Reference
- TCP/IP Network Administration, 5.2. Linux Kernel Configuration
- sourcegateways
: TCP/IP Network Administration, B.8.2. The rip Statement
- SPA (Software Publishers Association)
: Practical UNIX & Internet Security, 26.4.2.1. Software piracy and the SPA
- space
: (see whitespace)
- Spaf's first principle
: Practical UNIX & Internet Security, 2.4.4.5. Have authority commensurate with responsibility
- spams
: sendmail, 20.2.6. Reject Mail from Spamming or Mail-bombing Sites
- special
- aliases
: sendmail, 24.4. Special Aliases
- characters
- sendmail, 31.3.2. Syntax of the Configuration File Macro's Text
- sendmail, 35.3. Header Field Contents
- sendmail, 35.3.4.1. Balancing special characters
- delivery precedence
: sendmail, 14.4. Precedence
- operators
: (see wildcard operators)
- rule sets
: (see rule sets)
- speed, processing
: Building Internet Firewalls, 5.3.2. How Fast a Machine?
- spell command, UNIX
: Building Internet Firewalls, 5.8.5.3. About checksums for auditing
- SPF protocol
- TCP/IP Network Administration, 7.4. Interior Routing Protocols
- TCP/IP Network Administration, 7.4.3. Open Shortest Path First
- spies
- Building Internet Firewalls, 1.2.2.4. Spies (Industrial and
- Practical UNIX & Internet Security, 11.3. Authors
- Practical UNIX & Internet Security, 14.4.4.1. Kinds of eavesdropping
- split horizon rule
: TCP/IP Network Administration, 7.4.1.1. Running RIP with routed
- spoofing
- Practical UNIX & Internet Security, 8.5.3.1. Trusted path
- Practical UNIX & Internet Security, 16.3. IP Security
- Practical UNIX & Internet Security, 17.5. Monitoring Your Network with netstat
- Practical UNIX & Internet Security, 19.4.4.4. Spoofing RPC
- Practical UNIX & Internet Security, 19.4.4.5. Spoofing NIS
- addresses
: (see addresses)
- spool file
: Practical UNIX & Internet Security, 15.1.4. How the UUCP Commands Work
- spoolers, printer
: Practical UNIX & Internet Security, 12.3.4.1. Printer buffers
- sprinkler systems
- Practical UNIX & Internet Security, 12.2.1.1. Fire
- (see also water)
- Sprint response team
: Practical UNIX & Internet Security, F.3.4.32. Sprint Response Team
- sprintf function
- Practical UNIX & Internet Security, 23.1.1. The Lesson of the Internet Worm
- Practical UNIX & Internet Security, 23.2. Tips on Avoiding Security-related Bugs
- SPT_TYPE macro
: sendmail, 18.8. Alphabetized Reference
- src directory
: sendmail, 2.3. What's What in src
- sscanf function
: Practical UNIX & Internet Security, 23.2. Tips on Avoiding Security-related Bugs
- ssh (secure shell)
: TCP/IP Network Administration, 12.2.6. Secure Shell
- .ssh/identity.pub
: TCP/IP Network Administration, 12.2.6. Secure Shell
- .ssh_known_hosts file
: TCP/IP Network Administration, 12.2.6. Secure Shell
- ssh-keygen
: TCP/IP Network Administration, 12.2.6. Secure Shell
- SSL (Secure Socket Layer)
: Practical UNIX & Internet Security, 18.4.1. Eavesdropping Over the Wire
- SSRT (Software Security Response Team)
: Practical UNIX & Internet Security, F.3.4.9. DEC (Digital Equipment Corporation)
- stab database class
: sendmail, 33.8. Alphabetized Reference
- stacks
: (see protocols, stack)
- staff limitations
: TCP/IP Network Administration, 4.2.2. Defining the Subnet Mask
- Stallman, Richard
: Practical UNIX & Internet Security, 1. Introduction
- standard resource records (RRs)
- TCP/IP Network Administration, 8.3.2. Standard Resource Records
- TCP/IP Network Administration, C.3.1. Standard Resource Records
- start bit
- Practical UNIX & Internet Security, 14.1. Modems: Theory of Operation
- Practical UNIX & Internet Security, 14.2. Serial Interfaces
- Start of Authority
: (see SOA records)
- startup command
: Practical UNIX & Internet Security, 10.2.1. Accounting with System V UNIX
- attacks via
- Practical UNIX & Internet Security, 11.5.2. Start-up File Attacks
- Practical UNIX & Internet Security, 11.5.2.7. Other initializations
- intruder's changes to
: Practical UNIX & Internet Security, 24.4.1.6. Changes to startup files
- startup operating mode
: sendmail, 31.10. Alphabetized Reference
- startup script
- Building Internet Firewalls, 5.8.2.1. How are services managed?
- TCP/IP Network Administration, 7.3.1.1. Installing static routes at startup
- TCP/IP Network Administration, 8.3.6.1. Starting named
- stat function
: Practical UNIX & Internet Security, 5.4. Using Directory Permissions
- stat= equate (syslog output)
: sendmail, 26.1.3.11. stat= status of delivery
- state law enforcement
: Practical UNIX & Internet Security, 26.2.1. The Local Option
- stateless
: Practical UNIX & Internet Security, 20.1.4.3. Connectionless and stateless
- static
- assignment of addresses
: TCP/IP Network Administration, 4.2.1.1. Assigning host addresses
- circumstances favoring
: TCP/IP Network Administration, 4.3. Planning Routing
- electricity
: Practical UNIX & Internet Security, 12.2.1.8. Electrical noise
- links
: Practical UNIX & Internet Security, 23.4. Tips on Writing SUID/SGID Programs
- routing
- TCP/IP Network Administration, 4.3. Planning Routing
- TCP/IP Network Administration, 7.1. Common Routing Configurations
- TCP/IP Network Administration, 12.7.2. Routing control
- adding routes
: TCP/IP Network Administration, 7.3.1. Adding Static Routes
- building tale for
: TCP/IP Network Administration, 7.3. Building a Static Routing Table
- installing routes at startup
: TCP/IP Network Administration, 7.3.1.1. Installing static routes at startup
- statements (in gated)
: TCP/IP Network Administration, B.9. static Statements
- statistics
: sendmail, 26.2. Statistics
- cron program and
: sendmail, 26.2.3. Using cron for Daily and Weekly Statistics
- specifying file for
: sendmail, 34.8. Alphabetized Reference
- StatusFile option and
: sendmail, 22.4.5. The S Option and the Statistics File
- syslog utility and
: sendmail, 26.1.4. Gathering Statistics from syslog
- status, sendmail
: sendmail, B.1. Status file lines
- "Status:" header line
: sendmail, B.1. Status file lines
- status monitor daemon
: TCP/IP Network Administration, 9.1.1. NFS Daemons
- StatusFile (S) option
- sendmail, 22.4.5. The S Option and the Statistics File
- sendmail, 26.2.1. The sendmail.st File
- sendmail, 34.8. Alphabetized Reference
- stdin, running SMTP on
: sendmail, 36.7. Alphabetized Reference
- STDIR= directive
: sendmail, 18.4.8. STDIR=
- Steele, Guy L.
: Practical UNIX & Internet Security, 1. Introduction
- sticky bits
- Practical UNIX & Internet Security, 5.5.1. SUID, SGID, and Sticky Bits
- Practical UNIX & Internet Security, 5.5.6. SGID and Sticky Bits on Directories
- stickyhost feature
: sendmail, 19.6. Alphabetized m4 Macros
- stolen property
: (see theft)
- stop bit
- Practical UNIX & Internet Security, 14.1. Modems: Theory of Operation
- Practical UNIX & Internet Security, 14.2. Serial Interfaces
- storage
- Practical UNIX & Internet Security, 12.3.4. Protecting Local Storage
- Practical UNIX & Internet Security, 12.3.4.5. Function keys
- store-and-forward protocols
- Building Internet Firewalls, 7.5. Proxying Without a Proxy Server
- TCP/IP Network Administration, 3.4.1. Simple Mail Transfer Protocol
- strcpy routine
: Practical UNIX & Internet Security, 23.1.1. The Lesson of the Internet Worm
- streadd function
: Practical UNIX & Internet Security, 23.2. Tips on Avoiding Security-related Bugs
- stream
- TCP/IP Network Administration, 1.3. TCP/IP Protocol Architecture
- TCP/IP Network Administration, 5.4. The Internet Daemon
- strecpy function
: Practical UNIX & Internet Security, 23.2. Tips on Avoiding Security-related Bugs
- strength, cryptographic
: Practical UNIX & Internet Security, 6.2.3. Cryptographic Strength
- of DES algorithm
- Practical UNIX & Internet Security, 6.4.4.3. DES strength
- Practical UNIX & Internet Security, 6.4.5.2. Triple DES
- of RSA algorithm
: Practical UNIX & Internet Security, 6.4.6.3. Strength of RSA
- string command
: Practical UNIX & Internet Security, 12.3.5.2. X screen savers
- string-type arguments
: sendmail, 34.5. Option Argument Types
- string values, in printcap parameters
: TCP/IP Network Administration, 9.2.1. The printcap File
- strings command
: sendmail, 33.1. Enable at Compile Time
- stripping
- character high bit
: sendmail, 30.8. Alphabetized F= Flags
- comments from headers
: sendmail, 30.8. Alphabetized F= Flags
- newlines from "From:" headers
: sendmail, 34.8. Alphabetized Reference
- quotation marks
- sendmail, 30.8. Alphabetized F= Flags
- sendmail, 33.3.4.9. -q don't strip quotes from key (V8.7 and above)
- strtrns function
: Practical UNIX & Internet Security, 23.2. Tips on Avoiding Security-related Bugs
- Structure of Management Information (SMI)
: TCP/IP Network Administration, 11.9. Simple Network Management Protocol
- stub areas
- TCP/IP Network Administration, 7.4.3. Open Shortest Path First
- TCP/IP Network Administration, B.8.1. The ospf Statement
- stuck locks
: sendmail, 23.2.3.3. Locks can get stuck
- su command
- Practical UNIX & Internet Security, 4.2.1.2. Superuser is not for casual use
- Practical UNIX & Internet Security, 4.3. su: Changing Who You Claim to Be
- Practical UNIX & Internet Security, 4.3.8. Other Uses of su
- becoming superuser
: Practical UNIX & Internet Security, 4.3.4. Becoming the Superuser
- log of failed attempts
: Practical UNIX & Internet Security, 4.3.7. The Bad su Log
- sulog file
- Practical UNIX & Internet Security, 10.1. The Basic Log Files
- Practical UNIX & Internet Security, 10.3.2. sulog Log File
- utmp and wtmp files and
: Practical UNIX & Internet Security, 10.1.2.1. su commandutmp and wtmp files andsu
- subdomain name
- sendmail, 7.3.1. The hostname
- sendmail, 12.1.7. Adding the Domain
- (see also $m macro)
- subdomains
- TCP/IP Network Administration, 3.3.2. Creating Domains and Subdomains
- TCP/IP Network Administration, 8.3.5. The Reverse Domain File
- "Subject:" header line
- sendmail, 1.6. The Body
- sendmail, 35.10. Alphabetized Reference
- subnets
- Building Internet Firewalls, C.9.2. Subnets
- Practical UNIX & Internet Security, 16.2.1.2. Classical network addresses
- TCP/IP Network Administration, 2.3. Subnets
- TCP/IP Network Administration, 3.3.2. Creating Domains and Subdomains
- administration of
: TCP/IP Network Administration, 12.1.2.1. Use subnets to distribute control
- architecture, screened
- Building Internet Firewalls, 4.2.3. Screened Subnet Architecture
- Building Internet Firewalls, 9.1. Screened Subnet Architecture
- enterprise
: (see enterprise)
- for distributing control
: TCP/IP Network Administration, 12.1.2.1. Use subnets to distribute control
- mask (sm)
- TCP/IP Network Administration, 2.3. Subnets
- TCP/IP Network Administration, 4. Getting Started
- TCP/IP Network Administration, 6.1. The ifconfig Command
- assigning
- TCP/IP Network Administration, 6.1.3. Assigning a Subnet Mask
- TCP/IP Network Administration, A.1.1. The dip Script File
- defining
: TCP/IP Network Administration, 4.2.2. Defining the Subnet Mask
- misconfigured
: TCP/IP Network Administration, 11.4.1. Troubleshooting with the ifconfig Command
- parameter
: TCP/IP Network Administration, 9.4. A BOOTP Server
- movement among
: TCP/IP Network Administration, 3.6.1. Dynamic Host Configuration Protocol
- reasons for
: TCP/IP Network Administration, 4.2.2. Defining the Subnet Mask
- statements, in dhcpd
: TCP/IP Network Administration, 9.5.1. dhcpd.conf
- subroutines, rules as
: sendmail, 28.6.4. Rewrite Through Another Rule Set: $>set
- subscribing
: TCP/IP Network Administration, 13.5. Mailing Lists
- substitution (in encryption)
: Practical UNIX & Internet Security, 6.1.2. Cryptography and Digital Computers
- subtypes
: TCP/IP Network Administration, 3.4.3. Multipurpose Internet Mail Extensions
- success data, DSN delivery
: sendmail, 30.5.2.1. The $@ dsn part
- suid root
: (see root account/user)
- SUID/SGID programs
- Practical UNIX & Internet Security, 4.3.1. Real and Effective UIDs
- Practical UNIX & Internet Security, 5.5. SUID
- Practical UNIX & Internet Security, 5.5.7. SGID Bit on Files (System V UNIX Only): Mandatory
- Practical UNIX & Internet Security, 23. Writing Secure SUID and Network Programs
- Practical UNIX & Internet Security, B.3. SUID and SGID Files
- back door via
: Practical UNIX & Internet Security, 11.1.2. Back Doors and Trap Doors
- chown command and
: Practical UNIX & Internet Security, 5.7. chown: Changing a File's Owner
- chroot call and
: Practical UNIX & Internet Security, 8.1.5.2. Checking new software
- created by intruders
: Practical UNIX & Internet Security, 24.4.1.3. New SUID and SGID files
- on directories
: Practical UNIX & Internet Security, 5.5.6. SGID and Sticky Bits on Directories
- disabling (turning off)
: Practical UNIX & Internet Security, 5.5.5. Turning Off SUID and SGID in Mounted Filesystems
- finding all files
- Practical UNIX & Internet Security, 5.5.4. Finding All of the SUID and SGID Files
- Practical UNIX & Internet Security, 5.5.4.1. The ncheck command
- shell scripts
- Practical UNIX & Internet Security, 5.5.3. SUID Shell Scripts
- Practical UNIX & Internet Security, 5.5.3.2. Another SUID example: IFS and the /usr/lib/preserve
- uucp access
: Practical UNIX & Internet Security, 15.3. UUCP and Security
- writing
: Practical UNIX & Internet Security, 23.4. Tips on Writing SUID/SGID Programs
- SUID_ROOT_FILES_OK macro
: sendmail, 18.8. Alphabetized Reference
- suing
: (see civil actions)
- sulog file
- Practical UNIX & Internet Security, 4.3.7. The Bad su Log
- Practical UNIX & Internet Security, 10.3.2. sulog Log File
- sum command
- Practical UNIX & Internet Security, 6.5.5.1. Checksums
- Practical UNIX & Internet Security, 9.2.3. Checksums and Signatures
- Sun Microsystems
- Practical UNIX & Internet Security, F.3.4.34. Sun Microsystems
- TCP/IP Network Administration, UNIX Versions
- TCP/IP Network Administration, 3.3.5. Network Information Service
- TCP/IP Network Administration, 3.7.1. File Sharing
- TCP/IP Network Administration, 9.3. Network Information Service
- TCP/IP Network Administration, 10.6.1. Pattern Matching
- enhancements to sendmail
: sendmail, D. Sun Enhancements
- NIS
: (see NIS)
- NIS+ on
: (see NIS+)
- RPC
: (see RPCs)
- vendor specification
: sendmail, 27.5.1. The vendor
- SUN-DES-1 authentication
: Practical UNIX & Internet Security, 17.3.21.3. The xhost facility
- SunOS operating system
: Practical UNIX & Internet Security, 1.3. History of UNIX
- authdes_win variable
: Practical UNIX & Internet Security, 19.3.1.3. Setting the window
- /etc/fbtab file
: Practical UNIX & Internet Security, 17.3.21.1. /etc/fbtab and /etc/logindevperm
- TFTP sand
: Practical UNIX & Internet Security, 17.3.7. Trivial File Transfer Protocol (TFTP) (UDP Port 69)
- trusted hosts and
: Practical UNIX & Internet Security, 17.3.18.5. Searching for .rhosts files
- superencryption
: Practical UNIX & Internet Security, 6.4.5. Improving the Security of DES
- supernetting
: TCP/IP Network Administration, 2.2.2. Classless IP Addresses
- SuperSafe (s) option
- sendmail, 23.6.1. Periodically with -q
- sendmail, 34.8. Alphabetized Reference
- superusers
- Practical UNIX & Internet Security, 4. Users, Groups, and the Superuser
- Practical UNIX & Internet Security, 4.2.1. The Superuser
- Practical UNIX & Internet Security, 4.2.1.5. The problem with the superuser
- (see also root account/user)
- becoming with su
: Practical UNIX & Internet Security, 4.3.4. Becoming the Superuser
- changing passwords
- Practical UNIX & Internet Security, 8.4.1. Changing an Account's Password
- Practical UNIX & Internet Security, 8.8.8. Disabling an Account by Changing Its Password
- encryption and
: Practical UNIX & Internet Security, 6.2.4. Why Use Encryption with UNIX?
- logging attempts to become
: (see sulog file)
- privileges
- Practical UNIX & Internet Security, 27.1.3. What the Superuser Can and Cannot Do
- TCP/IP Network Administration, 8.3.3. The Cache Initialization File
- TCP/IP Network Administration, 9.3. Network Information Service
- TCP/IP Network Administration, B.1. The gated Command
- problems with
: Practical UNIX & Internet Security, 4.2.1.5. The problem with the superuser
- restrictions on
: Practical UNIX & Internet Security, 4.2.1.4. What the superuser can't do
- TCB files
: Practical UNIX & Internet Security, 8.5.3.2. Trusted computing base
- using passwd command
: Practical UNIX & Internet Security, 3.5. Verifying Your New Password
- web server as
: Practical UNIX & Internet Security, 18.2.1. The Server's UID
- supporting Internet services
: (see network services)
- suppressing header lines
: sendmail, 20.3. Alphabetized V8.8 Subroutines
- SURFnet
: Practical UNIX & Internet Security, F.3.4.25. Netherlands: German government institutions
- surges
: (see power surges)
- suspicious characters
- sendmail, 22.8.2. The smrsh Program
- sendmail, 23.3.4. Unknown Control Character in qf File
- svc.conf file
: sendmail, 7.3.1. The hostname
- SVR4 (System V Release 4)
: Practical UNIX & Internet Security, 1.3. History of UNIX
- swap partition
- Practical UNIX & Internet Security, 5.5.1. SUID, SGID, and Sticky Bits
- Practical UNIX & Internet Security, 25.2.3. Swap Space Problems
- SWATCH program
- Building Internet Firewalls, 5.9.2. Consider Writing Software to Automate Monitoring
- Building Internet Firewalls, B.6.4. SWATCH
- Practical UNIX & Internet Security, 10.6. Swatch: A Log File Tool
- Practical UNIX & Internet Security, 10.6.2. The Swatch Configuration File
- Practical UNIX & Internet Security, E.4.9. Swatch
- SWITCH
: Practical UNIX & Internet Security, F.3.4.35. SWITCH-connected sites
- switch database class
: sendmail, 33.8. Alphabetized Reference
- switched services
: sendmail, 34.8. Alphabetized Reference
- switches, packet
- Practical UNIX & Internet Security, 16.2. IPv4: The Internet Protocol Version 4
- Practical UNIX & Internet Security, 16.3. IP Security
- TCP/IP Network Administration, 1.5.1.1. The datagram
- TCP/IP Network Administration, 1.7. Application Layer
- (see also packets)
- asymmetric
: TCP/IP Network Administration, 11.4.4. Subdividing an Ethernet
- switches, command-line (sendmail)
- sendmail, 18.2. Vendor Versus Compiling
- sendmail, 36.2. Command-Line Switches
- sendmail, 36.4.3. Third: Process Switches
- ignoring illegal
: sendmail, 36.7. Alphabetized Reference
- for makemap program
: sendmail, 33.2.1. makemap Command-Line Switches
- symbol table
: sendmail, 12.1.3. Class Macros in the LHS
- symbolic links and permissions
- Practical UNIX & Internet Security, 5.1.7. File Permissions in Detail
- Practical UNIX & Internet Security, 18.2.2.2. Additional configuration issues
- Practical UNIX & Internet Security, 18.3.2. Commands Within the <Directory>
- symbolic name, delivery agent
: sendmail, 30.2. The Symbolic Name
- SymLinksIfOwnerMatch option
: Practical UNIX & Internet Security, 18.3.2. Commands Within the <Directory>
- symmetric encryption
: (see private-key cryptography)
- SYN (synchronize sequence numbers) bit
- Building Internet Firewalls, C.6.2. Transmission Control Protocol
- TCP/IP Network Administration, 1.6.2. Transmission Control Protocol
- SYN bit
: Practical UNIX & Internet Security, 16.2.4.2. TCP
- sync system call
- Practical UNIX & Internet Security, 5.6. Device Files
- Practical UNIX & Internet Security, 8.1.3. Accounts That Run a Single Command
- synchronization
: TCP/IP Network Administration, 1.6.2. Transmission Control Protocol
- synchronize sequence numbers (SYN) bit
: TCP/IP Network Administration, 1.6.2. Transmission Control Protocol
- synchronous modems
: (see modems)
- synchronous PPP, support for
: TCP/IP Network Administration, 5.3.1.2. Pseudo-device
- sys (user)
: Practical UNIX & Internet Security, 4.1. Users and Groups
- sys_errlist
: sendmail, 18.5.3. Badly defined sys_errlist
- SYS_TYPE macro
: sendmail, 18.8. Alphabetized Reference
- sysexits.h file
- sendmail, 36.5. sendmail's exit() Status
- sendmail, B.1. Status file lines
- syslog
- Building Internet Firewalls, 5.8.1.4. Safeguard the system logs
- Practical UNIX & Internet Security, 4.3.7. The Bad su Log
- Practical UNIX & Internet Security, 10.5. The UNIX System Log (syslog) Facility
- Practical UNIX & Internet Security, 10.5.3.1. Beware false log entries
- Practical UNIX & Internet Security, 23.1.1. The Lesson of the Internet Worm
- (see also logs/logging)
- configuring
: Building Internet Firewalls, 8.11. syslog
- example output from
: Building Internet Firewalls, 12.2.2. What Should You Watch For?
- false log entries
: Practical UNIX & Internet Security, 10.5.3.1. Beware false log entries
- SWATCH program with
: Building Internet Firewalls, 5.9.2. Consider Writing Software to Automate Monitoring
- where to log
- Practical UNIX & Internet Security, 10.5.2. Where to Log
- Practical UNIX & Internet Security, 10.5.2.3. Logging everything everywhere
- syslog file
: Practical UNIX & Internet Security, 17.3.4.3. Improving the security of Berkeley sendmail V8
- syslog.conf file
- Practical UNIX & Internet Security, 10.5.1. The syslog.conf Configuration File
- sendmail, 26.1.2. Tuning syslog.conf
- SYSLOG_BUFSIZE macro
: sendmail, 18.8. Alphabetized Reference
- syslogd
- sendmail, 26.1.2. Tuning syslog.conf
- TCP/IP Network Administration, 3.2. The Host Table
- TCP/IP Network Administration, A.2. The PPP Daemon
- TCP/IP Network Administration, A.3. chat
- systat service
: Practical UNIX & Internet Security, 17.3.1. systat (TCP Port 11)
- system
- (see also networks and networking)
- (see also operating systems)
- administration
: (see system administration)
- auditing activity on
: Practical UNIX & Internet Security, 2.1. Planning Your Security Needs
- autonomous
: Building Internet Firewalls, C.10. Internet Routing Architecture
- backing up critical files
- Practical UNIX & Internet Security, 7.3. Backing Up System Files
- Practical UNIX & Internet Security, 7.3.2. Building an Automatic Backup System
- clock
: (see system clock)
- crashes, watching carefully
: Building Internet Firewalls, 5.10.1. Watch Reboots Carefully
- customized
: Building Internet Firewalls, 13.1.6. Restore and Recover
- database files
: Practical UNIX & Internet Security, 1.2. What Is an Operating System?
- defense, diversity of
: Building Internet Firewalls, 3.7. Diversity of Defense
- documenting after incident
- Building Internet Firewalls, 13.1.5. Snapshot the System
- Building Internet Firewalls, 13.4.5. Planning for Snapshots
- failure of
: Building Internet Firewalls, 3.5. Fail-Safe Stance
- identity of
: sendmail, 31.7.1. Macros and the System Identity
- keeping up-to-date
: Building Internet Firewalls, 12.3.2. Keeping Your Systems Up To Date
- labeling and diagramming
: Building Internet Firewalls, 13.5.2. Labeling and Diagraming Your System
- logging activity
: (see logs/logging)
- monitoring
- Building Internet Firewalls, 5.9.2. Consider Writing Software to Automate Monitoring
- Building Internet Firewalls, 12.2. Monitoring Your System
- operating, testing reload of
: Building Internet Firewalls, 13.5.6. Testing the Reload of the Operating
- OSTYPE declaration
- sendmail, 16.2.2. OSTYPE
- sendmail, 19.3.1. OSTYPE()
- overload attacks
: Practical UNIX & Internet Security, 25.2.1.2. System overload attacks
- performance
: (see performance)
- rebuilding
: Building Internet Firewalls, 13.1.6. Restore and Recover
- remote, commands on
: Practical UNIX & Internet Security, 15.1.2. uux Command
- restoring after incident
: Building Internet Firewalls, 13.1.6. Restore and Recover
- planning for
: Building Internet Firewalls, 13.4.6. Planning for Restoration and Recovery
- shutting down
: Building Internet Firewalls, 13.1.2. Disconnect or Shut Down, as
- summarizing usage per user
: Practical UNIX & Internet Security, 25.2.2.2. quot command
- transfering files to other
: Practical UNIX & Internet Security, 15.1.1. uucp Command
- system (in swatch program)
: Practical UNIX & Internet Security, 10.6.2. The Swatch Configuration File
- system administration
- Practical UNIX & Internet Security, 2.4.4.5. Have authority commensurate with responsibility
- TCP/IP Network Administration, 1.7. Application Layer
- TCP/IP Network Administration, 3.1. Names and Addresses
- avoiding conventional passwords
- Practical UNIX & Internet Security, 8.8. Administrative Techniques for Conventional Passwords
- Practical UNIX & Internet Security, 8.8.9. Account Names Revisited: Using Aliases for Increased
- breaking forward loops
: sendmail, 25.7.2. Forwarding Loops
- change monitoring
: Practical UNIX & Internet Security, 9.3. A Final Note
- changing passwords
- Practical UNIX & Internet Security, 8.4.1. Changing an Account's Password
- Practical UNIX & Internet Security, 8.8.8. Disabling an Account by Changing Its Password
- cleaning up /tmp directory
: Practical UNIX & Internet Security, 25.2.4. /tmp Problems
- contacting administrator
: Practical UNIX & Internet Security, 24.2.4.2. How to contact the system administrator of a computer
- controlling UUCP security
: Practical UNIX & Internet Security, 15.3. UUCP and Security
- detached signatures (PGP)
: Practical UNIX & Internet Security, 6.6.3.6. PGP detached signatures
- disabling finger system
: Practical UNIX & Internet Security, 17.3.8.2. Disabling finger
- discovering intruders
- Practical UNIX & Internet Security, 24.2. Discovering an Intruder
- Practical UNIX & Internet Security, 24.2.6. Anatomy of a Break-in
- dual universes and
: Practical UNIX & Internet Security, 5.9.1. Dual Universes
- errors by
: Practical UNIX & Internet Security, 7.1.1.1. A taxonomy of computer failures
- finding largest files
: Practical UNIX & Internet Security, 25.2.2.1. Disk-full attacks
- immutable files and
: Practical UNIX & Internet Security, 9.1.1. Immutable and Append-Only Files
- locked accounts
: Practical UNIX & Internet Security, 3.3. Entering Your Password
- logging
: (see logs/logging)
- message authentication
: Practical UNIX & Internet Security, 6.5.2. Using Message Digests
- monitoring phantom mail
: Practical UNIX & Internet Security, 17.3.4.2. Using sendmail to receive email
- new passwords
: Practical UNIX & Internet Security, 3.4. Changing Your Password
- read-only filesystems and
: Practical UNIX & Internet Security, 9.1.2. Read-only Filesystems
- references on
: Practical UNIX & Internet Security, D.1.11. UNIX Programming and System Administration
- removing automatic backups
: Practical UNIX & Internet Security, 18.2.3.5. Beware stray CGI scripts
- responsibilities of administrators
- TCP/IP Network Administration, 1.7. Application Layer
- TCP/IP Network Administration, 4. Getting Started
- TCP/IP Network Administration, 4.3. Planning Routing
- TCP/IP Network Administration, 4.6. Informing the Users
- TCP/IP Network Administration, 5.1. Kernel Configuration
- sanitizing media
: Practical UNIX & Internet Security, 12.3.2.3. Sanitize your media before disposal
- statistics
: sendmail, 26.1.4. Gathering Statistics from syslog
- trusting
: Practical UNIX & Internet Security, 27.3.2. Your System Administrator?
- weakness-finding tools
: Practical UNIX & Internet Security, 11.1.1. Security Tools
- system call
: Practical UNIX & Internet Security, 5.1.7. File Permissions in Detail
- system clock
- changing
- Practical UNIX & Internet Security, 5.1.5. File Times
- Practical UNIX & Internet Security, 9.2.3. Checksums and Signatures
- Practical UNIX & Internet Security, 17.3.14. Network Time Protocol (NTP) (UDP Port 123)
- for random seeds
: Practical UNIX & Internet Security, 23.8. Picking a Random Seed
- Secure RPC timestamp
: Practical UNIX & Internet Security, 19.3.1.3. Setting the window
- System Dynamics cards
: Building Internet Firewalls, 10.3.2. Time-based Passwords
- system files
- Practical UNIX & Internet Security, 11.5.3.5. System initialization files
- Practical UNIX & Internet Security, 11.6.1.2. Writable system files and directories
- TCP/IP Network Administration, 5.1. Kernel Configuration
- system functions
- Practical UNIX & Internet Security, 5.5.3.2. Another SUID example: IFS and the /usr/lib/preserve
- Practical UNIX & Internet Security, 18.2.3.2. Testing is not enough!
- Practical UNIX & Internet Security, 18.2.3.3. Sending mail
- Practical UNIX & Internet Security, 23.2. Tips on Avoiding Security-related Bugs
- checking arguments to
: Practical UNIX & Internet Security, 23.2. Tips on Avoiding Security-related Bugs
- System Network Architecture (SNA)
: Practical UNIX & Internet Security, 16.4.2. SNA
- System V UNIX
: Practical UNIX & Internet Security, 1.3. History of UNIX
- accounting with
: Practical UNIX & Internet Security, 10.2.1. Accounting with System V UNIX
- chroot in
: Practical UNIX & Internet Security, 8.1.5. Restricted Filesystem
- default umask value
: Practical UNIX & Internet Security, 5.3. The umask
- groups and
: Practical UNIX & Internet Security, 4.1.3.2. Groups and older AT&T UNIX
- inittab program
: Practical UNIX & Internet Security, C.5.1. Process #1: /etc/init
- modems and
: Practical UNIX & Internet Security, 14.5.1. Hooking Up a Modem to Your Computer
- passwords
: Practical UNIX & Internet Security, 8.1.1. Accounts Without Passwords
- ps command with
: Practical UNIX & Internet Security, C.1.2.1. Listing processes with systems derived from System
- random number generators
: Practical UNIX & Internet Security, 23.7.3. drand48 ( ), lrand48 ( ), and mrand48 ( )
- recent login times
: Practical UNIX & Internet Security, 10.1.1. lastlog File
- Release 4 (SVR4)
: Practical UNIX & Internet Security, 1.3. History of UNIX
- restricted shells
: Practical UNIX & Internet Security, 8.1.4.1. Restricted shells under System V UNIX
- SGI bit on files
: Practical UNIX & Internet Security, 5.5.7. SGID Bit on Files (System V UNIX Only): Mandatory
- su command and
: Practical UNIX & Internet Security, 4.3.6. Restricting su
- SUID files, list of
: Practical UNIX & Internet Security, B.3. SUID and SGID Files
- utmp and wtmp files
: Practical UNIX & Internet Security, 10.1.2. utmp and wtmp Files
- UUCP
: Practical UNIX & Internet Security, 15.4.1.3. Format of USERFILE entry without system name
- /var/adm/loginlog file
: Practical UNIX & Internet Security, 10.1.4. loginlog File
- wtmpx file
: Practical UNIX & Internet Security, 10.1.2. utmp and wtmp Files
- SYSTEM5 macro
: sendmail, 18.8. Alphabetized Reference
- Systems file
- Practical UNIX & Internet Security, 15.3.3. Security of L.sys and Systems Files
- TCP/IP Network Administration, 9.2.2. Solaris Line Printer Service
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