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Index: T

UUCP over : (see UUCP)

virtual circuits

DNS & BIND, 11.3. Option Settings
DNS & BIND, 14.2.5. The _res Structure

wrapper package (TCPWRAPPER) : sendmail, 22.4.1. Accept/Reject Connections via libwrap.a

TCP Wrapper package

Building Internet Firewalls, 5.8.3.1. Using the TCP Wrapper package to protect services
Building Internet Firewalls, B.6.2. TCP Wrapper

TCP/IP protocol and services

DNS & BIND, 1.1. A (Very) Brief History of the Internet

Building Internet Firewalls, C. TCP/IP Fundamentals

Practical UNIX & Internet Security, 1.4.3. Add-On Functionality Breeds Problems

Practical UNIX & Internet Security, 10.5.2.2. Logging across the network

sendmail, Other Books, Other Problems

sendmail, 3.3.1. TCP/IP

(see also networks and networking)

architecture : TCP/IP Network Administration, 1.3. TCP/IP Protocol Architecture

benefits of

TCP/IP Network Administration, 1. Overview of TCP/IP
TCP/IP Network Administration, 1.1.1. TCP/IP Features
TCP/IP Network Administration, 1.4. Network Access Layer
TCP/IP Network Administration, 2.2.1. Address Classes

checklist for

Practical UNIX & Internet Security, A.1.1.15. Chapter 16: TCP/IP Networks
Practical UNIX & Internet Security, A.1.1.16. Chapter 17: TCP/IP Services

in corporate intranets : TCP/IP Network Administration, Preface

defined

TCP/IP Network Administration, 1. Overview of TCP/IP
TCP/IP Network Administration, 1.2. A Data Communications Model

DNS with : DNS & BIND, 1.5.3. If you have your own TCP/IP-based internet...

history of : TCP/IP Network Administration, 1.1. TCP/IP and the Internet

need for basic understanding of : TCP/IP Network Administration, 11.1. Approaching a Problem

network services : (see network services)

networks : (see networks and networking)

nslookup and : DNS & BIND, 11.3. Option Settings

over a serial line : TCP/IP Network Administration, 6.2. TCP/IP Over a Serial Line

packet : Building Internet Firewalls, 6.3.1. TCP/IP/Ethernet

protocol architecture : Building Internet Firewalls, C.3. TCP/IP Protocol Architecture

selected headers : TCP/IP Network Administration, F. Selected TCP/IP Headers

standardizing on : TCP/IP Network Administration, 4.5.3. Planning Your Mail System

tcpd (wrapper daemon)

Building Internet Firewalls, 5.8.3.1. Using the TCP Wrapper package to protect services
TCP/IP Network Administration, 12.5.1. wrapper
access control files : TCP/IP Network Administration, 12.5.1.1. tcpd access control files

tcpdump : TCP/IP Network Administration, 11.2. Diagnostic Tools

tcpwrapper program

Practical UNIX & Internet Security, 17.2. Controlling Access to Servers
Practical UNIX & Internet Security, E.4.10. tcpwrapper

TCPWRAPPERS macro : sendmail, 18.8. Alphabetized Reference

tcsh

Practical UNIX & Internet Security, 11.5.1. Shell Features
(see also shells)
history file : Practical UNIX & Internet Security, 10.4.1. Shell History

Telebit NetBlazer : Building Internet Firewalls, 6.5. Conventions for Packet Filtering

telecommunications : Practical UNIX & Internet Security, 26.2.2. Federal Jurisdiction

telephone

Practical UNIX & Internet Security, 14.3.1. Originate and Answer

(see also modems)

calls, recording outgoing : Practical UNIX & Internet Security, 10.3.1. aculog File

cellular : Practical UNIX & Internet Security, 12.2.1.8. Electrical noise

checklist for : Practical UNIX & Internet Security, A.1.1.13. Chapter 14: Telephone Security

hang-up signal : (see signals)

lines : Practical UNIX & Internet Security, 14.5.4. Physical Protection of Modems

leasing

Practical UNIX & Internet Security, 14.5.4. Physical Protection of Modems
TCP/IP Network Administration, 11.4.4.1. Network hardware problems

messages via : sendmail, 3.3.3. Other Protocols

one-way : Practical UNIX & Internet Security, 14.4.1. One-Way Phone Lines

physical security of : Practical UNIX & Internet Security, 14.5.4. Physical Protection of Modems

Telnet versus : Practical UNIX & Internet Security, 17.3.3. TELNET (TCP Port 23)

Telnet service

Building Internet Firewalls, 2.3. Remote Terminal Access and Command

Building Internet Firewalls, 6.7.1. Outbound Telnet Service

Practical UNIX & Internet Security, 3.5. Verifying Your New Password

Practical UNIX & Internet Security, 16.2.5. Clients and Servers

Practical UNIX & Internet Security, 17.3.3. TELNET (TCP Port 23)

TCP/IP Network Administration, 1.7. Application Layer

TCP/IP Network Administration, 2.7.3. Sockets

TCP/IP Network Administration, 5.3.1.2. Pseudo-device

TCP/IP Network Administration, 13.3.1. archie

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

configuring : Building Internet Firewalls, 8.3. Terminal Access (Telnet)

in screened host architecture : Building Internet Firewalls, 9.2.1.1. Telnet
in screened subnet architecture : Building Internet Firewalls, 9.1.1.1. Telnet

inbound : Building Internet Firewalls, 6.7.2. Inbound Telnet Service

inbound versus outbound : Building Internet Firewalls, 8.3. Terminal Access (Telnet)

outbound : Building Internet Firewalls, 6.7.1. Outbound Telnet Service

proxying with TIS FWTK : Building Internet Firewalls, 7.7.2. Telnet and rlogin Proxying with

rlogin vs. : Practical UNIX & Internet Security, 17.3.18. rlogin and rsh (TCP Ports 513 and 514)

test

TCP/IP Network Administration, 9.7.1. POP Server
TCP/IP Network Administration, 11.4.2. Troubleshooting with the arp Command

telnet service and RCS : DNS & BIND, 6.3.1. Differences in Service Behavior

telnetd program : Practical UNIX & Internet Security, 11.1.2. Back Doors and Trap Doors

Telstra : Building Internet Firewalls, A.1.1. Telstra

temperature : Practical UNIX & Internet Security, 12.2.1.6. Temperature extremes

TEMPEST system : Practical UNIX & Internet Security, 12.3.1.3. Eavesdropping by radio and using TEMPEST

TempFileMode (F) option

sendmail, 13.2.4. The Default File Permissions
sendmail, 22.8.3.7. The TempFileMode option
sendmail, 34.8. Alphabetized Reference
TCP/IP Network Administration, 10.5.4. The Set Option Command

temporary customizations : sendmail, 19.6. Alphabetized m4 Macros

temporary errors : sendmail, 36.5.8. EX_TEMPFAIL A Recoverable Error

temporary root servers : DNS & BIND, 8.6.3. Really Long Outages (Weeks)

TERM signal : DNS & BIND, 7.1. BIND Name Server Signals

terminal name and last command : Practical UNIX & Internet Security, 10.1.3. last Program

terminal servers : Building Internet Firewalls, 10.6. Terminal Servers and Modem Pools

terminal, name of controlling : sendmail, 31.10. Alphabetized Reference

terminology, importance of using standard

TCP/IP Network Administration, 1.2. A Data Communications Model
TCP/IP Network Administration, 1.3. TCP/IP Protocol Architecture

terrorism : Practical UNIX & Internet Security, 12.2.5. Defending Against Acts of War and Terrorism

test networks : Building Internet Firewalls, 4.4.1. Laboratory Networks

testing

address-testing mode : sendmail, 8.3. Rule Sets

addresses : sendmail, 29.10.4. The check_compat Rule Set

aliases

sendmail, 4.1.4. Verify Mode (-bv)
sendmail, 24.5.2. Check the Right Side of Aliases

backups : Practical UNIX & Internet Security, 12.3.2.1. Verify your backups

CGI scripts : Practical UNIX & Internet Security, 18.2.3.2. Testing is not enough!

core files and : Practical UNIX & Internet Security, 23.2. Tips on Avoiding Security-related Bugs

delivery agents

sendmail, 6.3.3. Testing the New Delivery Agent Definitions
sendmail, 38.5.6. Try a Delivery Agent with /try

domain setup : DNS & BIND, 4.7.3. Testing Your Setup with nslookup

firewalls : Building Internet Firewalls, 6.8.7. It Should Be Able to Log Accepted and

group permissions : sendmail, 34.8. Alphabetized Reference

identd information : sendmail, 20.2.4. Verify identd Information

if host is local : sendmail, 17.2.1. Is the Host Local?

macros : (see macro conditionals)

options : sendmail, 13.3. Testing the Options

password verification : Practical UNIX & Internet Security, 3.5. Verifying Your New Password

programs : Practical UNIX & Internet Security, 23.2. Tips on Avoiding Security-related Bugs

reload of operating system : Building Internet Firewalls, 13.5.6. Testing the Reload of the Operating

routers : Building Internet Firewalls, 4.4.1. Laboratory Networks

rule-testing mode

sendmail, 36.7. Alphabetized Reference
sendmail, 38. Rule-Set Testing with -bt

sendmail installation : sendmail, 2.6. Test It

sendmail.cf file : sendmail, 15.1. Test the Configuration File

seteuid and setreuid routines : sendmail, 22.1.1. Test seteuid and setreuid

signatures with PGP : Practical UNIX & Internet Security, 6.6.3.5. Decrypting messages and verifying signatures

software : Practical UNIX & Internet Security, 1.4.2. Software Quality

users with SMTP commands : sendmail, 22.3.2. SMTP vrfy and expn

zone transfers manually : DNS & BIND, 13.2.1. How to Use named-xfer

text (TXT) resource records : TCP/IP Network Administration, C.3.1.9. Text record

text data content type : TCP/IP Network Administration, 3.4.3. Multipurpose Internet Mail Extensions

text database class : sendmail, 33.8. Alphabetized Reference

"Text:" header line : sendmail, 35.10. Alphabetized Reference

tf file : sendmail, 23.2.6. The Temporary qf Rewrite Image: tf

TFTP (Trivial File Transport Protocol)

Building Internet Firewalls, 2.2. File Transfer
Building Internet Firewalls, 8.2.2. Trivial File Transfer Protocol
Practical UNIX & Internet Security, 17.3.7. Trivial File Transfer Protocol (TFTP) (UDP Port 69)
TCP/IP Network Administration, 5.4. The Internet Daemon
TCP/IP Network Administration, 9.6. Managing Distributed Servers
target for intruders : TCP/IP Network Administration, C.3.1.8. Well-Known Services record

tftpd server : Practical UNIX & Internet Security, 17.3.7. Trivial File Transfer Protocol (TFTP) (UDP Port 69)

theft

Practical UNIX & Internet Security, 7.1.1.1. A taxonomy of computer failures

Practical UNIX & Internet Security, 12.2.6. Preventing Theft

Practical UNIX & Internet Security, 12.2.6.4. Minimizing downtime

Practical UNIX & Internet Security, 12.4.1.2. Potential for eavesdropping and data theft

of backups

Practical UNIX & Internet Security, 12.3.2. Protecting Backups
Practical UNIX & Internet Security, 12.3.2.4. Backup encryption

of information

Building Internet Firewalls, 1.2.1.3. Information Theft
Building Internet Firewalls, 1.2.2.4. Spies (Industrial and
Practical UNIX & Internet Security, 11.3. Authors

of RAM chips : Practical UNIX & Internet Security, 12.2.6. Preventing Theft

third-party billing : Practical UNIX & Internet Security, 14.5.4. Physical Protection of Modems

Thompson, Ken

Practical UNIX & Internet Security, 1.3. History of UNIX
Practical UNIX & Internet Security, 8.6. The UNIX Encrypted Password System

threats, incidents, attacks

TCP/IP Network Administration, 1.7. Application Layer

TCP/IP Network Administration, 4.2.1. Obtaining an IP Address

accidental : Building Internet Firewalls, 1.2.3. Stupidity and Accidents

assessing

Practical UNIX & Internet Security, 2.3.3. Adding Up the Numbers
TCP/IP Network Administration, 12.1.1. Assessing the Threat

back doors

Practical UNIX & Internet Security, 2.5. The Problem with Security Through Obscurity
Practical UNIX & Internet Security, 6.2.3. Cryptographic Strength
Practical UNIX & Internet Security, 11.1. Programmed Threats: Definitions
Practical UNIX & Internet Security, 11.1.2. Back Doors and Trap Doors
Practical UNIX & Internet Security, 11.5. Protecting Yourself
Practical UNIX & Internet Security, 27.1.2. Trusting Trust
in MUDs and IRCs : Practical UNIX & Internet Security, 17.3.23. Other TCP Ports: MUDs and Internet Relay Chat (IRC)

backup-related

Practical UNIX & Internet Security, 7.1.6. Security for Backups
Practical UNIX & Internet Security, 7.1.6.3. Data security for backups

bacteria programs : Practical UNIX & Internet Security, 11.1.7. Bacteria and Rabbits

biological threats : Practical UNIX & Internet Security, 12.2.1.7. Bugs (biological)

broadcast storms : Practical UNIX & Internet Security, 25.3.2. Message Flooding

via CGI scripts : Practical UNIX & Internet Security, 18.2.3.2. Testing is not enough!

changing file owners : Practical UNIX & Internet Security, 5.7. chown: Changing a File's Owner

changing system clock : Practical UNIX & Internet Security, 5.1.5. File Times

code breaking

Practical UNIX & Internet Security, 6.1.1. Code Making and Code Breaking
(see also cryptography)

command channel : Building Internet Firewalls, 8.1. Electronic Mail

commonly attacked accounts : Practical UNIX & Internet Security, 8.1.2. Default Accounts

computer failures : Practical UNIX & Internet Security, 7.1.1.1. A taxonomy of computer failures

contacting service providers about : Building Internet Firewalls, 13.4.4.3. Vendors and service providers

data-driven attacks : Building Internet Firewalls, 8.1. Electronic Mail

decode aliases : Practical UNIX & Internet Security, 17.3.4.2. Using sendmail to receive email

deep tree structures : Practical UNIX & Internet Security, 25.2.2.8. Tree-structure attacks

denial of service

Building Internet Firewalls, 1.2.1.2. Denial of Service

Practical UNIX & Internet Security, 1.5. Role of This Book

Practical UNIX & Internet Security, 17.1.3. The /etc/inetd Program

Practical UNIX & Internet Security, 17.3.21.5. Denial of service attacks under X

Practical UNIX & Internet Security, 25. Denial of Service Attacks and Solutions

Practical UNIX & Internet Security, 25.3.4. Clogging

TCP/IP Network Administration, 12.1.1. Assessing the Threat

accidental

Building Internet Firewalls, 1.2.3. Stupidity and Accidents
Practical UNIX & Internet Security, 25.2.5. Soft Process Limits: Preventing Accidental Denial

automatic lockout : Practical UNIX & Internet Security, 3.3. Entering Your Password

checklist for : Practical UNIX & Internet Security, A.1.1.24. Chapter 25: Denial of Service Attacks and Solutions

destructive attacks : Practical UNIX & Internet Security, 25.1. Destructive Attacks

disk attacks

Practical UNIX & Internet Security, 25.2.2. Disk Attacks
Practical UNIX & Internet Security, 25.2.2.8. Tree-structure attacks

inodes : Practical UNIX & Internet Security, 25.2.2.3. Inode problems

internal inetd services : Practical UNIX & Internet Security, 17.1.3. The /etc/inetd Program

on networks

Practical UNIX & Internet Security, 25.3. Network Denial of Service Attacks
Practical UNIX & Internet Security, 25.3.4. Clogging

overload attacks

Practical UNIX & Internet Security, 25.2. Overload Attacks
Practical UNIX & Internet Security, 25.2.5. Soft Process Limits: Preventing Accidental Denial

via syslog : Practical UNIX & Internet Security, 10.5.1. The syslog.conf Configuration File

system overload attacks : Practical UNIX & Internet Security, 25.2.1.2. System overload attacks

X Window System : Practical UNIX & Internet Security, 17.3.21.5. Denial of service attacks under X

detecting, plan for : Building Internet Firewalls, 13.4.1. Planning for Detection

dictionary attacks

Building Internet Firewalls, 10.3.1. One-Time Passwords
Practical UNIX & Internet Security, 8.6.1. The crypt()
TCP/IP Network Administration, 12.2. User Authentication

disposed materials : Practical UNIX & Internet Security, 12.3.3. Other Media

DNS client flooding : Practical UNIX & Internet Security, 16.3.2. Security and Nameservice

DNS nameserver attacks : Practical UNIX & Internet Security, 17.3.6.2. DNS nameserver attacks

DNS zone transfers : Practical UNIX & Internet Security, 17.3.6.1. DNS zone transfers

documenting

Building Internet Firewalls, 13.1.5. Snapshot the System
Building Internet Firewalls, 13.1.7. Document the Incident
planning for : Building Internet Firewalls, 13.4.5. Planning for Snapshots

dormant accounts

Practical UNIX & Internet Security, 8.4. Managing Dormant Accounts
Practical UNIX & Internet Security, 8.4.3. Finding Dormant Accounts

evaluating, plan for : Building Internet Firewalls, 13.4.2. Planning for Evaluation of the Incident

false syslog entries : Practical UNIX & Internet Security, 10.5.3.1. Beware false log entries

filename attacks : Practical UNIX & Internet Security, 11.5.1.4. Filename attacks

having tools and supplies for : Building Internet Firewalls, 13.5.5. Keeping a Cache of Tools and Supplies

hidden space : Practical UNIX & Internet Security, 25.2.2.7. Hidden space

hijacking : Building Internet Firewalls, 10.1.1. Hijacking

HOME variable attacks : Practical UNIX & Internet Security, 11.5.1.3. $HOME attacks

identifying and quantifying

Practical UNIX & Internet Security, 2.2.1.2. Identifying threats
Practical UNIX & Internet Security, 2.2.2. Review Your Risks

IFS variable attacks : Practical UNIX & Internet Security, 11.5.1.2. IFS attacks

intruders/attackers

Building Internet Firewalls, 1.2.1.1. Intrusion

Practical UNIX & Internet Security, 1. Introduction

TCP/IP Network Administration, 1.7. Application Layer

TCP/IP Network Administration, 5.2. Linux Kernel Configuration

(see also finger service)

(see also firewalls)

creating hidden files : Practical UNIX & Internet Security, 24.4.1.7. Hidden files and directories

discovering

Practical UNIX & Internet Security, 24.2. Discovering an Intruder
Practical UNIX & Internet Security, 24.2.6. Anatomy of a Break-in

legal options regarding : Practical UNIX & Internet Security, 26.1. Legal Options After a Break-in

pursuing and capturing : Building Internet Firewalls, 13.3. Pursuing and Capturing the

recovering from : Building Internet Firewalls, 13.1.6. Restore and Recover

responding to

Practical UNIX & Internet Security, 24. Discovering a Break-in
Practical UNIX & Internet Security, 24.7. Damage Control

revealing DNS information to : Building Internet Firewalls, 8.10.4.3. Revealing too much information to

reviewing response strategies : Building Internet Firewalls, 13.4.8. Periodic Review of Plans

slower machines and : Building Internet Firewalls, 5.3.2. How Fast a Machine?

tracking from log files : Practical UNIX & Internet Security, 24.3. The Log Files: Discovering an Intruder's

types of : Building Internet Firewalls, 1.2.2. Types of Attackers

letting in accidentally : Practical UNIX & Internet Security, 11.4. Entry

logic bombs

Practical UNIX & Internet Security, 11.1.3. Logic Bombs
Practical UNIX & Internet Security, 27.2.2. Viruses on the Distribution Disk

mailing list for : Practical UNIX & Internet Security, E.1.3.9. RISKS

media failure : Practical UNIX & Internet Security, 7.1.4. Guarding Against Media Failure

meet-in-the-middle attacks : Practical UNIX & Internet Security, 6.4.5.1. Double DES

MUD/IRC client programs : Practical UNIX & Internet Security, 17.3.23. Other TCP Ports: MUDs and Internet Relay Chat (IRC)

multiple failed attacks : Building Internet Firewalls, 12.2.3. The Good, the Bad, and the Ugly

newly created accounts : Practical UNIX & Internet Security, 24.4.1. New Accounts

NIS, unintended disclosure : Practical UNIX & Internet Security, 19.4.5. Unintended Disclosure of Site Information with NIS

with NNTP : Practical UNIX & Internet Security, 17.3.13. Network News Transport Protocol (NNTP) (TCP Port

notifying people about

Building Internet Firewalls, 13.1.4. Make `Incident in Progress'
Building Internet Firewalls, 13.4.4. Planning for Notification of People
TCP/IP Network Administration, 12.4.2. Looking for Trouble
TCP/IP Network Administration, 12.4.2.2. Checking login activity

open (guest) accounts

Practical UNIX & Internet Security, 8.1.4. Open Accounts
Practical UNIX & Internet Security, 8.1.4.6. Potential problems with rsh

password attacks : Building Internet Firewalls, 10.3.1. One-Time Passwords

PATH variable attacks : Practical UNIX & Internet Security, 11.5.1.1. PATH attacks

plaintext attacks : Practical UNIX & Internet Security, 6.2.3. Cryptographic Strength

playback (replay) attacks : Practical UNIX & Internet Security, 19.6.1.2. Using the ticket granting ticket

practicing drills for : Building Internet Firewalls, 13.5.7. Doing Drills

programmed

Practical UNIX & Internet Security, 11. Protecting Against Programmed Threats
Practical UNIX & Internet Security, 11.6.2. Shared Libraries
Practical UNIX & Internet Security, A.1.1.10. Chapter 11: Protecting Against Programmed Threats
Practical UNIX & Internet Security, D.1.4. Computer Viruses and Programmed Threats
authors of : Practical UNIX & Internet Security, 11.3. Authors
damage from : Practical UNIX & Internet Security, 11.2. Damage

recovering from : Building Internet Firewalls, 13.1.6. Restore and Recover

planning to : Building Internet Firewalls, 13.4.6. Planning for Restoration and Recovery

replay attacks : Practical UNIX & Internet Security, 17.3.14. Network Time Protocol (NTP) (UDP Port 123)

responding to

Building Internet Firewalls, 12.2.5. Responding to Attacks
Building Internet Firewalls, 13. Responding to Security Incidents

reviewing response strategies : Building Internet Firewalls, 13.4.8. Periodic Review of Plans

rsh, problems with : Practical UNIX & Internet Security, 8.1.4.6. Potential problems with rsh

sendmail problems : Practical UNIX & Internet Security, 17.3.4.1. sendmail and security

spoofed network connection : Practical UNIX & Internet Security, 8.5.3.1. Trusted path

start-up file attacks

Practical UNIX & Internet Security, 11.5.2. Start-up File Attacks
Practical UNIX & Internet Security, 11.5.2.7. Other initializations

system clock : (see system clock)

theft : (see theft)

/tmp directory attacks : Practical UNIX & Internet Security, 25.2.4. /tmp Problems

toll fraud : Practical UNIX & Internet Security, 14.4.1. One-Way Phone Lines

traffic analysis : Practical UNIX & Internet Security, 18.4. Avoiding the Risks of Eavesdropping

tree-structure attacks : Practical UNIX & Internet Security, 25.2.2.8. Tree-structure attacks

Trojan horses

Practical UNIX & Internet Security, 4.3.5. Using su with Caution
Practical UNIX & Internet Security, 11.1.4. Trojan Horses
Practical UNIX & Internet Security, 11.5. Protecting Yourself
Practical UNIX & Internet Security, 27.2.2. Viruses on the Distribution Disk
Kerberos and : Practical UNIX & Internet Security, 19.6.5. Kerberos Limitations
X clients : Practical UNIX & Internet Security, 17.3.21.2. X security

trusted hosts : (see trusted hosts)

types of : Building Internet Firewalls, 1.2. What Are You Trying To Protect

unattended terminals

Practical UNIX & Internet Security, 12.3.5. Unattended Terminals
Practical UNIX & Internet Security, 12.3.5.2. X screen savers

unowned files : Practical UNIX & Internet Security, 24.4.1.8. Unowned files

vandalism

Practical UNIX & Internet Security, 12.2.4. Vandalism
Practical UNIX & Internet Security, 12.2.4.3. Network connectors

viruses

Building Internet Firewalls, 1.4.2.4. A firewall can't protect against
Practical UNIX & Internet Security, 11.1. Programmed Threats: Definitions
Practical UNIX & Internet Security, 11.1.5. Viruses
Practical UNIX & Internet Security, 27.2.2. Viruses on the Distribution Disk
bacteria programs : Practical UNIX & Internet Security, 11.1.7. Bacteria and Rabbits
references on : Practical UNIX & Internet Security, D.1.4. Computer Viruses and Programmed Threats

war and terrorism : Practical UNIX & Internet Security, 12.2.5. Defending Against Acts of War and Terrorism

weakness-finding tools : Practical UNIX & Internet Security, 11.1.1. Security Tools

by web browsers

Practical UNIX & Internet Security, 18.5. Risks of Web Browsers
Practical UNIX & Internet Security, 18.5.2. Trusting Your Software Vendor

worms : Practical UNIX & Internet Security, 11.1.6. Worms

three-way handshake

Building Internet Firewalls, C.6.2. Transmission Control Protocol
Practical UNIX & Internet Security, 16.2.4.2. TCP

thresholds triggering alarms : TCP/IP Network Administration, 11.9. Simple Network Management Protocol

ticket-granting service

Practical UNIX & Internet Security, 19.6.1.1. Initial login
Practical UNIX & Internet Security, 19.6.1.2. Using the ticket granting ticket
Practical UNIX & Internet Security, 19.6.1.3. Authentication, data integrity, and secrecy

tickets : (see Kerberos authentication system)

tiff image subtype : TCP/IP Network Administration, 3.4.3. Multipurpose Internet Mail Extensions

Tiger

Building Internet Firewalls, 5.8.5.1. Auditing packages
Building Internet Firewalls, B.2.2. Tiger
Practical UNIX & Internet Security, E.4.11. Tiger

tilde (~)

in automatic backups : Practical UNIX & Internet Security, 18.2.3.5. Beware stray CGI scripts

as home directory

Practical UNIX & Internet Security, 11.5.1.3. $HOME attacks
sendmail, 25.7. The User's ~/.forward File

~! in mail messages : Practical UNIX & Internet Security, 8.1.3. Accounts That Run a Single Command

time and date

Practical UNIX & Internet Security, 19.3.1.3. Setting the window

sendmail, 13.2.2. Limit the Life of Queued Messages

(see also intervals)

(see also NTP)

(see also system clock)

collecting statistics regularly : sendmail, 26.2.3. Using cron for Daily and Weekly Statistics

CPU, accounting

Practical UNIX & Internet Security, 10.2. The acct/pacct Process Accounting File
Practical UNIX & Internet Security, 10.2.3. messages Log File

current : (see $b macro; $d macro; $t macro)

date command

Practical UNIX & Internet Security, 8.1.3. Accounts That Run a Single Command
Practical UNIX & Internet Security, 24.5.1. Never Trust Anything Except Hardcopy

"Date:" header line

sendmail, 1.5. The Header
sendmail, 14.2.2. The Date: Header
sendmail, 30.8. Alphabetized F= Flags
sendmail, 35.10. Alphabetized Reference

defining random seed by : Practical UNIX & Internet Security, 23.8. Picking a Random Seed

encrypted timestamp : Building Internet Firewalls, 10.2.2. Something You Know

headers for : sendmail, 35.6.5. Date and Trace Headers

integer representation ($t macro) : sendmail, 14.2.3. The Message-ID: Header

last processing of queue : sendmail, 23.9. The qf File Internals

macros and : sendmail, 31.7.2. Macros and the Date

message origin date : (see $a macro)

modification

Practical UNIX & Internet Security, 5.1.2. Inodes
Practical UNIX & Internet Security, 5.1.5. File Times
Practical UNIX & Internet Security, 7.4.7. inode Modification Times
Practical UNIX & Internet Security, 9.2.2. Checklists and Metadata
Practical UNIX & Internet Security, 24.5.1. Never Trust Anything Except Hardcopy

most recent connection : sendmail, B.1. Status file lines

most recent login : Practical UNIX & Internet Security, 10.1.1. lastlog File

passwords based on : Building Internet Firewalls, 10.3.2. Time-based Passwords

of placing message in queue : sendmail, 23.9. The qf File Internals

Q-Time : sendmail, 23.4. Printing the Queue

Secure RPC window of : Practical UNIX & Internet Security, 19.3.1.3. Setting the window

service : Building Internet Firewalls, 2.11. Time Service

setting time zone : sendmail, 34.8. Alphabetized Reference

time expressions : sendmail, 34.5. Option Argument Types

total time to deliver : sendmail, 26.1.3.2. delay= total time to deliver

transaction delay : sendmail, 26.1.3.13. xdelay= transaction

time arguments : sendmail, 13.2.2. Limit the Life of Queued Messages

Time Exceeded message : TCP/IP Network Administration, 11.5.2. Tracing Routes

time to live (TTL)

DNS & BIND, 2.7.1. Time to Live
DNS & BIND, 4.2.9. The Root Cache Data
DNS & BIND, 4.8.4. SOA Values
sendmail, 15.3. MX Records
sendmail, 21.5.2. Offsite Servers
TCP/IP Network Administration, 8.3.2. Standard Resource Records
TCP/IP Network Administration, 11.5.2. Tracing Routes
TCP/IP Network Administration, B.8.5. The bgp Statement
TCP/IP Network Administration, C.3.1. Standard Resource Records
changing : DNS & BIND, 8.4. Changing TTLs
load sharing and : DNS & BIND, 10.12. Load Sharing Between Mirrored Servers

Timeout (r) option

sendmail, 13.2.2. Limit the Life of Queued Messages
sendmail, 34.8. Alphabetized Reference

TIMEOUT keyword

TCP/IP Network Administration, A.3. chat
TCP/IP Network Administration, E.4.2. sendmail Options

Timeout.ident option : sendmail, 18.8. Alphabetized Reference

Timeout.queuereturn option

sendmail, 23.9. The qf File Internals
TCP/IP Network Administration, 10.5.4. The Set Option Command

timeouts

Practical UNIX & Internet Security, 11.1.3. Logic Bombs

Practical UNIX & Internet Security, 23.3. Tips on Writing Network Programs

sendmail, 34.8. Alphabetized Reference

nslookup

DNS & BIND, 11.1.2. Timeouts
DNS & BIND, 11.3. Option Settings

resolver queries : DNS & BIND, 6.1.4.1. One name server configured

timesharing

Practical UNIX & Internet Security, 19.6.5. Kerberos Limitations
Practical UNIX & Internet Security, 23.2. Tips on Avoiding Security-related Bugs

timestamping : TCP/IP Network Administration, B.4. Trace Statements

Timezone table (NIS+) : Practical UNIX & Internet Security, 19.5.3. NIS+ Tables

TimeZoneSpec (t) option : sendmail, 34.8. Alphabetized Reference

timing-out

TCP/IP Network Administration, 1.6.2. Transmission Control Protocol
TCP/IP Network Administration, 5.2. Linux Kernel Configuration
addresses : (see addresses)
in Solaris : TCP/IP Network Administration, 6.3.6. Solaris PPP
in wait command : TCP/IP Network Administration, 6.3.2. Dial-Up PPP

tip command

Practical UNIX & Internet Security, 10.3.1. aculog File
Practical UNIX & Internet Security, 14.5. Modems and UNIX
Practical UNIX & Internet Security, 14.5.3.1. Originate testing
Practical UNIX & Internet Security, 14.5.3.3. Privilege testing
-l option : Practical UNIX & Internet Security, 14.5.3.1. Originate testing

TIS Firewall Toolkit

DNS & BIND, 15.4.1.2. Application gateways

Building Internet Firewalls, B.1.1. TIS Internet

Practical UNIX & Internet Security, E.4.12. TIS Internet Firewall Toolkit

authentication server : Building Internet Firewalls, 10.4.2. TIS FWTK

FTP daemon : Building Internet Firewalls, 8.2.1.5. Using the TIS FWTK

FTP proxy server : Building Internet Firewalls, 8.2.1.2. Proxying characteristics of

ftp-gw-proxy server : Building Internet Firewalls, 9.1.1.2. FTP

HTTP proxy server

Building Internet Firewalls, 8.6.2. Proxying Characteristics of
Building Internet Firewalls, 9.1.1.5. HTTP

for proxying : Building Internet Firewalls, 7.7. Using the TIS

S/Key password program : Building Internet Firewalls, 10.3.1. One-Time Passwords

smap package : Building Internet Firewalls, 8.1.1.3. Improving SMTP

SNK-004 card : Building Internet Firewalls, 10.3.3. Challenge-Response Schemes

TLDs : (see top-level domains)

TMOUT variable : Practical UNIX & Internet Security, 12.3.5.1. Built-in shell autologout

/tmp directory

Practical UNIX & Internet Security, 14.5.3.3. Privilege testing
Practical UNIX & Internet Security, 25.2.4. /tmp Problems

tmpfile function : Practical UNIX & Internet Security, 23.2. Tips on Avoiding Security-related Bugs

"To:" header line : sendmail, 35.10. Alphabetized Reference

to= equate (syslog output) : sendmail, 26.1.3.12. to= show final recipient

TOBUFSIZE macro : sendmail, 18.8. Alphabetized Reference

token cards : Practical UNIX & Internet Security, 8.7.2. Token Cards

token ring

Practical UNIX & Internet Security, 16.1. Networking
TCP/IP Network Administration, 4.2.2. Defining the Subnet Mask
interface : TCP/IP Network Administration, 5.2. Linux Kernel Configuration
network : TCP/IP Network Administration, 1.5.1.2. Routing datagrams

tokenization

sendmail, 8.5. The Workspace

sendmail, 12.1.3. Class Macros in the LHS

sendmail, 28.2. Tokenizing Rules

of header field contents : sendmail, 35.3. Header Field Contents

quotation marks and : sendmail, 13.2.8. The Unquoted Space Replacement Character

workspace buffer

sendmail, 8.5. The Workspace
sendmail, 28.3. The Workspace

tokens : TCP/IP Network Administration, 10.6.1. Pattern Matching

tokens, separation operators for

sendmail, 31.10. Alphabetized Reference
sendmail, 34.8. Alphabetized Reference

toll fraud : Practical UNIX & Internet Security, 14.4.1. One-Way Phone Lines

"Too many open files" message

DNS & BIND, 7.6.1. Common Syslog Messages
DNS & BIND, 10.4.2.4. Changing the open files limit
DNS & BIND, 13.5.3. Name Server Reports Too Many Open Files

"too many named rulesets" error : sendmail, 29.1.2. Rule-Set Names

tools and supplies

Building Internet Firewalls, 13.5.5. Keeping a Cache of Tools and Supplies

Practical UNIX & Internet Security, 1.3. History of UNIX

TCP/IP Network Administration, 1.7. Application Layer

(see also diagnostic tools)

to find weaknesses : Practical UNIX & Internet Security, 11.1.1. Security Tools

hand : TCP/IP Network Administration, 11.2. Diagnostic Tools

quality of

Practical UNIX & Internet Security, 1.4.2. Software Quality
Practical UNIX & Internet Security, 1.4.3. Add-On Functionality Breeds Problems

top utility : DNS & BIND, 8.1.2. Capacity Planning

top-level domains

DNS & BIND, 2.1.2. Domains

sendmail, 8.1. A Fictional Network

TCP/IP Network Administration, 3.3.1. The Domain Hierarchy

choosing : DNS & BIND, 3.2.1. Where in the World Do I Fit?

generic (gTLDs)

DNS & BIND, 2.2.1. Top-Level Domains
DNS & BIND, 3.2.2.2. The generic top-level domains

Internet : DNS & BIND, 2.2.1. Top-Level Domains

list of : DNS & BIND, C. Top-Level Domains

naming subdomains as : DNS & BIND, 9.3. What to Name Your Children

root name servers : DNS & BIND, 2.6.1. Root Name Servers

topology feature : DNS & BIND, 10.6. Preferring Name Servers on Certain Networks

topology statements (in dhcpd) : TCP/IP Network Administration, D.3.1. Topology Statements

Totient Function : Practical UNIX & Internet Security, 6.4.6.1. How RSA works

touch command : DNS & BIND, 7.6.1. Common Syslog Messages

trace

file : TCP/IP Network Administration, 7.7.2. Testing the Configuration

headers : sendmail, 35.6.5. Date and Trace Headers

options : TCP/IP Network Administration, B.4. Trace Statements

statements (in gated)

TCP/IP Network Administration, B.4. Trace Statements
TCP/IP Network Administration, B.8.6. The egp Statement

traceroute utility

Building Internet Firewalls, 2.10. Network Management Services
Building Internet Firewalls, 5.6. Selecting Services Provided by the
TCP/IP Network Administration, 11.2. Diagnostic Tools
TCP/IP Network Administration, 11.3. Testing Basic Connectivity
TCP/IP Network Administration, 11.5. Checking Routing
TCP/IP Network Administration, 11.5.2. Tracing Routes
configuring : Building Internet Firewalls, 8.12.4. traceroute

tracing connections

Practical UNIX & Internet Security, 24.2.4. Tracing a Connection
Practical UNIX & Internet Security, 24.2.4.2. How to contact the system administrator of a computer

tracing queries and responses : DNS & BIND, 11.6.1. Seeing the Query and Response Packets

tracking number : TCP/IP Network Administration, 4.4.1. Obtaining a Domain Name

trademarks : Practical UNIX & Internet Security, 26.4.3. Trademark Violations

traffic

DNS & BIND, 1.2.1. The History of the Domain Name System
DNS & BIND, 2.7. Caching
DNS & BIND, 8.1.2. Capacity Planning
(see also performance)
dial-on-demand and : DNS & BIND, 15.5.2. Dial-on-Demand
limiting : DNS & BIND, 10.4.1.1. Limiting transfers initiated per name server
load sharing : DNS & BIND, 10.12. Load Sharing Between Mirrored Servers
root name servers : DNS & BIND, 2.6.1. Root Name Servers

trailer encapsulation

TCP/IP Network Administration, 6.1.2. Checking the Interface with ifconfig
TCP/IP Network Administration, 6.1.5.2. ARP and trailers

trailing dot in domain names

DNS & BIND, 2.1.1. Domain Names

DNS & BIND, 4.2.3. SOA Records

DNS & BIND, 4.4.1. Appending Domains

DNS & BIND, 13.3.6. 6. Missing Dot at the End of a Name in a DNS Database File

DNS & BIND, A.1. Master File Format

sendmail, 15.3. MX Records

stripping

sendmail, 17.4. Rule Set 4
sendmail, 29.5.1. Stripping Trailing Dots

training

Practical UNIX & Internet Security, 13.2.1. Initial Training
TCP/IP Network Administration, 11.1.1. Troubleshooting Hints
TCP/IP Network Administration, 12.2.2. Choosing a Password

transfer zones : Practical UNIX & Internet Security, 16.2.6.1. DNS under UNIX

transfer-format substatement : DNS & BIND, 10.4.1.4. More efficient zone transfers

transferring files

Building Internet Firewalls, 2.2. File Transfer
Practical UNIX & Internet Security, 15.1.1. uucp Command
(see files, transferring)

transfers-in substatement

DNS & BIND, 10.4.1.2. Limiting the total number of zone transfers initiated
DNS & BIND, F.1.11.1. limit transfers-in

transfers-per-ns substatement

DNS & BIND, 10.4.1.1. Limiting transfers initiated per name server
DNS & BIND, F.1.11.1. limit transfers-in
DNS & BIND, F.1.11.2. limit transfers-per-ns

transformational operators : (see $ operators)

translating : (see mapping)

Transmission Control Protocol (TCP)

Practical UNIX & Internet Security, 16.2.4.2. TCP
TCP/IP Network Administration, 1.6. Transport Layer
TCP/IP Network Administration, 1.6.2. Transmission Control Protocol
TCP/IP Network Administration, 1.7. Application Layer
(see also tcpd)
segment header : TCP/IP Network Administration, F.2. TCP Segment Header

transmission order : DNS & BIND, A.3.3. Data Transmission Order

transmission protocol : sendmail, 26.1.3.8. proto= the protocol used in transmission

transmission window size : TCP/IP Network Administration, 5.2. Linux Kernel Configuration

Transmit Data (TD) : Practical UNIX & Internet Security, 14.3. The RS-232 Serial Protocol

transmitters, radio : Practical UNIX & Internet Security, 12.2.1.8. Electrical noise

transparency : Building Internet Firewalls, 4.1.2. Proxy Services

of client changes for proxying : Building Internet Firewalls, 7.2.1. Using Custom Client Software for
of packet filtering : Building Internet Firewalls, 6.1.1.2. Packet filtering doesn't require user knowledge or

Transport Layer

TCP/IP Network Administration, 1.2. A Data Communications Model
TCP/IP Network Administration, 1.6. Transport Layer
passing datagrams : TCP/IP Network Administration, 1.5.1.4. Passing datagrams to the transport layer

transposition (in encryption) : Practical UNIX & Internet Security, 6.1.2. Cryptography and Digital Computers

trap doors : (see back doors)

trashing : Practical UNIX & Internet Security, 12.3.3. Other Media

tree structures : Practical UNIX & Internet Security, 25.2.2.8. Tree-structure attacks

trees, DNS : Building Internet Firewalls, 8.10.3. DNS Data

triggered updates : TCP/IP Network Administration, 7.4.1.1. Running RIP with routed

trimlog

Building Internet Firewalls, B.6.5. trimlog
Practical UNIX & Internet Security, E.4.13. trimlog

Triple DES

Practical UNIX & Internet Security, 6.4.5. Improving the Security of DES
Practical UNIX & Internet Security, 6.4.5.2. Triple DES

triple, RHS : sendmail, 9.2. The RHS Triple

Tripwire package

Building Internet Firewalls, 5.8.5.1. Auditing packages
Building Internet Firewalls, B.2.3. Tripwire
Practical UNIX & Internet Security, 9.2.4. Tripwire
Practical UNIX & Internet Security, 9.2.4.2. Running Tripwire
Practical UNIX & Internet Security, 19.5.5. NIS+ Limitations
Practical UNIX & Internet Security, E.4.14. Tripwire
TCP/IP Network Administration, 12.4.2.1. Checking files

Trivial File Transport Protocol : (see TFTP)

Trojan horses

Practical UNIX & Internet Security, 4.3.5. Using su with Caution
Practical UNIX & Internet Security, 11.1.4. Trojan Horses
Practical UNIX & Internet Security, 11.5. Protecting Yourself
Practical UNIX & Internet Security, 27.2.2. Viruses on the Distribution Disk
Kerberos and : Practical UNIX & Internet Security, 19.6.5. Kerberos Limitations
X clients : Practical UNIX & Internet Security, 17.3.21.2. X security

trouble, looking for : TCP/IP Network Administration, 12.4.2. Looking for Trouble

troubleshooting

DNS & BIND, 11.7. Troubleshooting nslookup Problems

DNS & BIND, 13. Troubleshooting DNS and BIND

DNS & BIND, 13.6.8.4. What have I got?

(see also debugging)

aliases : sendmail, 24.7. Pitfalls

basic connectivity : TCP/IP Network Administration, 11.3. Testing Basic Connectivity

checking delegation

DNS & BIND, 9.6. Good Parenting
DNS & BIND, 9.6.2. Managing Delegation

class macros : sendmail, 32.4. Pitfalls

command line : sendmail, 36.6. Pitfalls

corrupted cache

DNS & BIND, 13.6.8. Name Server Keeps Loading Old Data
DNS & BIND, 13.6.8.4. What have I got?

delivery agent execution : sendmail, 30.7. Pitfalls

delivery to programs : sendmail, 24.2.3.1. Possible failures

disasters : sendmail, 21.5. Prepare for Disaster

DNS : sendmail, 21.6. Pitfalls

handling down sites : sendmail, 23.7.1. Handling a Down Site

headers : sendmail, 35.9. Pitfalls

hints : TCP/IP Network Administration, 11.1.1. Troubleshooting Hints

buying time : TCP/IP Network Administration, 11.4.2. Troubleshooting with the arp Command
involve users : TCP/IP Network Administration, 11.4.2.1. ARP problem case study

interoperability problems : DNS & BIND, 13.5. Interoperability and Version Problems

list of potential problems : DNS & BIND, 13.3. Potential Problem List

mailing lists : sendmail, 25.5. Problems with Mailing Lists

name service : TCP/IP Network Administration, 11.6. Checking Name Service

network access

TCP/IP Network Administration, 1.7. Application Layer
TCP/IP Network Administration, 11.4. Troubleshooting Network Access
(see also networks and networking)

NIS problems : DNS & BIND, 13.1. Is NIS Really Your Problem?

not overlooking the obvious : TCP/IP Network Administration, 11.1.1. Troubleshooting Hints

nslookup program : DNS & BIND, 11.7. Troubleshooting nslookup Problems

preventative measures

DNS & BIND, 8.5.2. Recommendations
DNS & BIND, 8.6. Coping with Disaster
DNS & BIND, 8.5. Planning for Disasters
TCP/IP Network Administration, 11.9. Simple Network Management Protocol

protocol problems : TCP/IP Network Administration, 11.7. Analyzing Protocol Problems

queue : sendmail, 23.8. Pitfalls

recognizing symptoms : DNS & BIND, 13.6. Problem Symptoms

routing : TCP/IP Network Administration, 11.5. Checking Routing

sendmail options for : sendmail, 34.6.6. Problem Solving

sendmail.cf file : sendmail, 27.6. Pitfalls

serial connections : TCP/IP Network Administration, 6.4.4. Troubleshooting Serial Connections

tools and techniques : DNS & BIND, 13.2. Troubleshooting Tools and Techniques

truncate system call : Practical UNIX & Internet Security, 5.1.7. File Permissions in Detail

truncated packets : DNS & BIND, 11.3. Option Settings

trust

Practical UNIX & Internet Security, 1.1. What Is Computer Security?
Practical UNIX & Internet Security, 2.1.1. Trust
Practical UNIX & Internet Security, 8.5.3.2. Trusted computing base
Practical UNIX & Internet Security, 17.1.1. The /etc/services File
Practical UNIX & Internet Security, 27. Who Do You Trust?
Practical UNIX & Internet Security, 27.4. What All This Means
TCP/IP Network Administration, 12. Network Security
of log files : Practical UNIX & Internet Security, 10.8. Managing Log Files

TRUST_POPEN macro : sendmail, 18.8. Alphabetized Reference

trusted hosts

Practical UNIX & Internet Security, 17.3.18.1. Trusted hosts and users
Practical UNIX & Internet Security, 17.3.18.4. The ~/.rhosts file
TCP/IP Network Administration, 12.2.5. Secure the r Commands
NFS and : Practical UNIX & Internet Security, 17.3.18.2. The problem with trusted hosts
security : TCP/IP Network Administration, 9.1.5. NFS Authentication Server

trusted path : Practical UNIX & Internet Security, 8.5.3.1. Trusted path

trusted ports : Practical UNIX & Internet Security, 1.4.3. Add-On Functionality Breeds Problems

trusted users

Practical UNIX & Internet Security, 17.3.4.1. sendmail and security
Practical UNIX & Internet Security, 17.3.18.1. Trusted hosts and users
sendmail, 5.3.10. Trusted Users
sendmail, 14.6. Trusted User
sendmail, 19.6. Alphabetized m4 Macros
sendmail, 22.8.1. Trusted Users
sendmail, 32.5. Alphabetized Reference
(see also T configuration command)

TRW Network Area and System Administrators : Practical UNIX & Internet Security, F.3.4.36. TRW Network Area and System Administrators

/try command

sendmail, 38.5.6. Try a Delivery Agent with /try
TCP/IP Network Administration, 10.8.1. Testing Rewrite Rules

TRY_AGAIN error : DNS & BIND, 14.2.4. The Resolver Library Routines

/tryflags command

sendmail, 38.5.4. Select Whom to /parse or /try with /tryflags
TCP/IP Network Administration, 10.8.1. Testing Rewrite Rules

TryNullMXList (w) option

sendmail, 21.3.7. Ambiguous MX Records
sendmail, 34.8. Alphabetized Reference

TTL (time to live)

DNS & BIND, 2.7.1. Time to Live
DNS & BIND, 4.2.9. The Root Cache Data
DNS & BIND, 4.8.4. SOA Values
sendmail, 15.3. MX Records
sendmail, 21.5.2. Offsite Servers
TCP/IP Network Administration, 8.3.2. Standard Resource Records
TCP/IP Network Administration, 11.5.2. Tracing Routes
TCP/IP Network Administration, B.8.5. The bgp Statement
TCP/IP Network Administration, C.3.1. Standard Resource Records
changing : DNS & BIND, 8.4. Changing TTLs
load sharing and : DNS & BIND, 10.12. Load Sharing Between Mirrored Servers

tty device files

Practical UNIX & Internet Security, 7.1.2. What Should You Back Up?
sendmail, 18.8. Alphabetized Reference
TCP/IP Network Administration, 6.3.5. PPP Server Configuration
TCP/IP Network Administration, 6.4.4. Troubleshooting Serial Connections

ttymon program : Practical UNIX & Internet Security, C.5.2. Logging In

TTYNAME macro : sendmail, 18.8. Alphabetized Reference

ttys file

Practical UNIX & Internet Security, 8.5.1. Secure Terminals
Practical UNIX & Internet Security, 14.5.1. Hooking Up a Modem to Your Computer

ttytab file : Practical UNIX & Internet Security, C.5.1. Process #1: /etc/init

ttywatch program : Practical UNIX & Internet Security, 24.2.3. Monitoring the Intruder

tunefs command : Practical UNIX & Internet Security, 25.2.2.6. Reserved space

tuning

delivery agent : sendmail, 30.3.1. Tuning Without an Appropriate Keyword

DNS lookups : sendmail, 34.8. Alphabetized Reference

sendmail

sendmail, 18.2. Vendor Versus Compiling
sendmail, 18.3.3. What to Tune
sendmail, 18.4. Tuning Makefile

syslog.conf : sendmail, 26.1.2. Tuning syslog.conf

tunneling

Practical UNIX & Internet Security, 16.4.1. IPX
TCP/IP Network Administration, 5.3.1.2. Pseudo-device

tunnels, multicast : Building Internet Firewalls, 8.9.3. The Multicast Backbone (MBONE)

twisted pair : Practical UNIX & Internet Security, 16.1. Networking

TXT records

DNS & BIND, 7.2.4.1. General text information
DNS & BIND, A.1.2.15. TXT text
Building Internet Firewalls, 8.10.4.3. Revealing too much information to
TCP/IP Network Administration, C.3.1.9. Text record
queries statistic : DNS & BIND, 7.6.2. Understanding the BIND Statistics
secure zones and : DNS & BIND, 10.11.2.2. Restricting queries in a particular zone

types

delivery agent

sendmail, 6.3. The local Delivery Agent
sendmail, 6.4. Add the Missing Parts to Mhub

message body : sendmail, 23.9. The qf File Internals

nslookup : sendmail, 21.4. How to Use nslookup

queue files : sendmail, 23.2. Parts of a Queued Message

TZ variable : Practical UNIX & Internet Security, 23.2. Tips on Avoiding Security-related Bugs

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