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Index: W

(see also logs/logging)

ERRLIST_PREDEFINED macro : sendmail, 18.8. Alphabetized Reference

-f switch and : sendmail, 14.6. Trusted User

severity level

sendmail, 26.1.1. syslog(3)
sendmail, 26.1.2. Tuning syslog.conf

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

water

Practical UNIX & Internet Security, 12.2.1.1. Fire
Practical UNIX & Internet Security, 12.2.1.12. Water
Practical UNIX & Internet Security, 12.2.1.11. Humidity

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

web : (see World Wide Web)

web browsers

Building Internet Firewalls, 2.5. The World Wide Web

Practical UNIX & Internet Security, 18.5. Risks of Web Browsers

Practical UNIX & Internet Security, 18.5.2. Trusting Your Software Vendor

TCP/IP Network Administration, 13.1. The World Wide Web

as FTP clients : Building Internet Firewalls, 8.2.1.1. Packet filtering characteristics of

as Gopher clients : (see Gopher)

MIME in : Building Internet Firewalls, 8.1.3. Multipurpose Internet Mail Extensions

Netscape Navigator

Building Internet Firewalls, 2.5. The World Wide Web
TCP/IP Network Administration, 13.1. The World Wide Web
encryption system of : Practical UNIX & Internet Security, 18.4.1. Eavesdropping Over the Wire
random number generator : Practical UNIX & Internet Security, 23.8. Picking a Random Seed

web documents : (see HTML documents)

web servers

Practical UNIX & Internet Security, 18.2. Running a Secure Server

Practical UNIX & Internet Security, 18.2.5. Other Issues

access to files on

Practical UNIX & Internet Security, 18.3. Controlling Access to Files on Your Server
Practical UNIX & Internet Security, 18.3.3. Setting Up Web Users and Passwords

authentication users : Practical UNIX & Internet Security, 18.3.3. Setting Up Web Users and Passwords

.htaccess file bug : Practical UNIX & Internet Security, 18.3.1. The access.conf and .htaccess Files

log files : Practical UNIX & Internet Security, 18.4.2. Eavesdropping Through Log Files

Macintosh : Practical UNIX & Internet Security, 18.2. Running a Secure Server

multiple suppliers of : Practical UNIX & Internet Security, 18.6. Dependence on Third Parties

as superuser : Practical UNIX & Internet Security, 18.2.1. The Server's UID

symbolic-link following : Practical UNIX & Internet Security, 18.2.2.2. Additional configuration issues

Weiner, Michael : Practical UNIX & Internet Security, 6.4.4.3. DES strength

well-known ports

Building Internet Firewalls, C.12.3. Sockets
TCP/IP Network Administration, 2.7.3. Sockets
TCP/IP Network Administration, 3.6. Bootstrap Protocol
TCP/IP Network Administration, 11.4.4. Subdividing an Ethernet

Well-Known Services (WKS) resource records

TCP/IP Network Administration, 2.7. Protocols, Ports, and Sockets
TCP/IP Network Administration, C.3.1.8. Well-Known Services record

Westinghouse : Practical UNIX & Internet Security, F.3.4.46. Westinghouse Electric

wheel group

Practical UNIX & Internet Security, 4.1.3.1. The /etc/group file
Practical UNIX & Internet Security, 4.3.6. Restricting su
Practical UNIX & Internet Security, 8.5.2. The wheel Group

white pages : TCP/IP Network Administration, 13.6. The White Pages

whitespace

blank line at message end : sendmail, 30.8. Alphabetized F= Flags

continuation lines : sendmail, 27.4. Continuation Lines

in macros

sendmail, 7.1. Overview
sendmail, 31.3.2. Syntax of the Configuration File Macro's Text

old-style address lists : sendmail, 13.2.7. Accept Old-Style Lists of Addresses

in recipient lists : sendmail, 34.8. Alphabetized Reference

replacement character for space

sendmail, 13.2.8. The Unquoted Space Replacement Character
sendmail, 34.8. Alphabetized Reference

replacing in database keys : sendmail, 33.3.4.10. -s space replacement character (V8.7 and above)

in sendmail.cf file : sendmail, 27.2. Comments

space character : sendmail, 28.2.2. The Space Character Is Special

stripping newlines from "From:" headers : sendmail, 34.8. Alphabetized Reference

who command

Practical UNIX & Internet Security, 8.1.3. Accounts That Run a Single Command
Practical UNIX & Internet Security, 10.1.2. utmp and wtmp Files
Practical UNIX & Internet Security, 17.3.1. systat (TCP Port 11)
Practical UNIX & Internet Security, 24.2.1. Catching One in the Act
Practical UNIX & Internet Security, 24.2.4. Tracing a Connection
TCP/IP Network Administration, 12.4.1. Know Your System

whodo command

Practical UNIX & Internet Security, 10.1.2. utmp and wtmp Files
Practical UNIX & Internet Security, 24.2.1. Catching One in the Act

whois command

Practical UNIX & Internet Security, 24.2.4.2. How to contact the system administrator of a computer
TCP/IP Network Administration, 4.4.1. Obtaining a Domain Name
TCP/IP Network Administration, 13.6. The White Pages

whois service

Building Internet Firewalls, 2.7. Information About People
Building Internet Firewalls, 8.8.2. whois

Wide Area Information Servers

Building Internet Firewalls, 2.6. Other Information Services
Building Internet Firewalls, 8.7.2. Wide Area Information Servers

wide area networks (WANs)

Practical UNIX & Internet Security, 16.1. Networking
TCP/IP Network Administration, 3.7.1. File Sharing
TCP/IP Network Administration, 6.2. TCP/IP Over a Serial Line
TCP/IP Network Administration, 11.3.1. The ping Command
TCP/IP Network Administration, 11.4.4.1. Network hardware problems

wildcard MX records : sendmail, 21.3.4. Wildcard MX Records

wildcard operators

sendmail, 8.7. Wildcard Operators

sendmail, 8.7.3. More Play with LHS Matching

sendmail, 28.2.1. $ Operators Are Tokens

sendmail, 28.5. The LHS

sendmail, 28.6. The RHS

(see also $ operators)

positional operators

sendmail, 9.2.3. The User ($:)
sendmail, 28.6.1. Copy by Position: $digit

WILDCARD_SHELL macro : sendmail, 18.8. Alphabetized Reference

window : TCP/IP Network Administration, 1.6.2. Transmission Control Protocol

window systems : Building Internet Firewalls, 2.13. Window Systems

X11 : (see X11 window system)

window of time : (see time and date)

windows (glass) : Practical UNIX & Internet Security, 12.2.3.3. Glass walls

windows servers : (see NSWS; X Window System)

wireless transmission : (see radio)

wiretaps : (see eavesdropping)

wiz command : Practical UNIX & Internet Security, 17.3.4.2. Using sendmail to receive email

wizard's password (sendmail) : Practical UNIX & Internet Security, 17.3.4.1. sendmail and security

WKS resource records

TCP/IP Network Administration, 2.7. Protocols, Ports, and Sockets
TCP/IP Network Administration, C.3.1.8. Well-Known Services record

WN server : Practical UNIX & Internet Security, 18.3. Controlling Access to Files on Your Server

wordinclass() : sendmail, 20.3. Alphabetized V8.8 Subroutines

workspace

sendmail, 8.5. The Workspace
sendmail, 28.3. The Workspace
tokenizing : (see tokenization)

workstations, backing up : Practical UNIX & Internet Security, 7.2.1. Individual Workstation

world permissions : TCP/IP Network Administration, 9.1.5. NFS Authentication Server

World Wide Web (WWW)

Building Internet Firewalls, 2.5. The World Wide Web

Practical UNIX & Internet Security, 18. WWW Security

Practical UNIX & Internet Security, 18.7. Summary

TCP/IP Network Administration, 13.1. The World Wide Web

Archie access via : Building Internet Firewalls, 8.7.3.3. Providing Archie service to your

browsers : (see web browsers)

checklist for : Practical UNIX & Internet Security, A.1.1.17. Chapter 18: WWW Security

configuring : Building Internet Firewalls, 8.6. World Wide Web (WWW) and HTTP

documents on : (see HTML documents)

eavesdropping on

Practical UNIX & Internet Security, 18.4. Avoiding the Risks of Eavesdropping
Practical UNIX & Internet Security, 18.4.2. Eavesdropping Through Log Files

encrypting information on : Practical UNIX & Internet Security, 18.4.1. Eavesdropping Over the Wire

HTTP : (see HTTP)

logging dowloaded files : Practical UNIX & Internet Security, 10.3.5. access_log Log File

MIME in : Building Internet Firewalls, 8.1.3. Multipurpose Internet Mail Extensions

posting breakins on : Practical UNIX & Internet Security, 24.6. Resuming Operation

resources for

Building Internet Firewalls, A.1. WWW Pages
Building Internet Firewalls, A.3.7. WWW-Security
Practical UNIX & Internet Security, E.3. WWW Pages

security mailing list : Practical UNIX & Internet Security, E.1.3.10. WWW-security

servers : (see Web servers)

trademarks and copyrights

Practical UNIX & Internet Security, 26.4.2. Copyright Infringement
Practical UNIX & Internet Security, 26.4.3. Trademark Violations

viruses through : Practical UNIX & Internet Security, 11.1.5. Viruses

world-readable file : TCP/IP Network Administration, 12.2.1. The Shadow Password File

world-writable files/directories : Practical UNIX & Internet Security, 11.6.1.1. World-writable user files and directories

Worm program

Practical UNIX & Internet Security, 1. Introduction
Practical UNIX & Internet Security, 23.1.1. The Lesson of the Internet Worm

worms

Practical UNIX & Internet Security, 11.1. Programmed Threats: Definitions
Practical UNIX & Internet Security, 11.1.6. Worms

wrappers

sendmail, 22.4.1. Accept/Reject Connections via libwrap.a
TCP/IP Network Administration, 12.5.1. wrapper
checklist for : Practical UNIX & Internet Security, A.1.1.21. Chapter 22: Wrappers and Proxies
tcpd : TCP/IP Network Administration, 5.4. The Internet Daemon

writable directories in anonymous FTP : Building Internet Firewalls, 8.2.1.6. Be careful of writable

write command

Practical UNIX & Internet Security, 5.5.3.1. write: Example of a possible SUID/SGID security
Practical UNIX & Internet Security, 23.2. Tips on Avoiding Security-related Bugs
in Swatch program : Practical UNIX & Internet Security, 10.6.2. The Swatch Configuration File
time-outs on : Practical UNIX & Internet Security, 23.3. Tips on Writing Network Programs

write permission

Practical UNIX & Internet Security, 5.1.7. File Permissions in Detail
Practical UNIX & Internet Security, 5.4. Using Directory Permissions
(see permissions)
backups : Practical UNIX & Internet Security, 7.1.6.2. Write-protect your backups
filesystems : Practical UNIX & Internet Security, 9.1.2. Read-only Filesystems

WRITE= command : Practical UNIX & Internet Security, 15.5.2. Permissions Commands

writing

passwords (on paper) : Practical UNIX & Internet Security, 3.6.5. Writing Down Passwords
programmed threats : Practical UNIX & Internet Security, 11.3. Authors

wtmp file

Practical UNIX & Internet Security, 10.1.2. utmp and wtmp Files
Practical UNIX & Internet Security, 10.1.3.1. Pruning the wtmp file
TCP/IP Network Administration, 12.4.2.2. Checking login activity

wtmpx file : Practical UNIX & Internet Security, 10.1.2. utmp and wtmp Files

wuarchive daemon

Building Internet Firewalls, B.5.1. wuarchive ftpd
Building Internet Firewalls, 8.2.1.4. Using the wuarchive

wuftpd server : Practical UNIX & Internet Security, 17.3.2.4. Setting up an FTP server

WWW : (see World Wide Web)

www user/group : Practical UNIX & Internet Security, 18.2.2. Understand Your Server's Directory Structure

www.fugue.com/dhcp : TCP/IP Network Administration, D.1. Compiling dhcpd

www.internic.net : TCP/IP Network Administration, 13.4. Retrieving RFCs

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