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Index: T

(see also networks)

checklist for

A.1.1.15. Chapter 16: TCP/IP Networks
A.1.1.16. Chapter 17: TCP/IP Services

network services : (see network services)

networks

16. TCP/IP Networks
16.5. Summary

tcpwrapper program

17.2. Controlling Access to Servers
E.4.10. tcpwrapper

tcsh

11.5.1. Shell Features
(see also shells)
history file : 10.4.1. Shell History

telecommunications : 26.2.2. Federal Jurisdiction

telephone

14.3.1. Originate and Answer

(see also modems)

calls, recording outgoing : 10.3.1. aculog File

cellular : 12.2.1.8. Electrical noise

checklist for : A.1.1.13. Chapter 14: Telephone Security

hang-up signal : (see signals)

lines : 14.5.4. Physical Protection of Modems

leasing : 14.5.4. Physical Protection of Modems
one-way : 14.4.1. One-Way Phone Lines
physical security of : 14.5.4. Physical Protection of Modems

Telnet versus : 17.3.3. TELNET (TCP Port 23)

Telnet utility

3.5. Verifying Your New Password
16.2.5. Clients and Servers
17.3.3. TELNET (TCP Port 23)
versus rlogin : 17.3.18. rlogin and rsh (TCP Ports 513 and 514)

telnetd program : 11.1.2. Back Doors and Trap Doors

temperature : 12.2.1.6. Temperature extremes

TEMPEST system : 12.3.1.3. Eavesdropping by radio and using TEMPEST

terminal name and last command : 10.1.3. last Program

terrorism : 12.2.5. Defending Against Acts of War and Terrorism

testing

CGI scripts : 18.2.3.2. Testing is not enough!
core files and : 23.2. Tips on Avoiding Security-related Bugs
programs : 23.2. Tips on Avoiding Security-related Bugs
software : 1.4.2. Software Quality

TFTP (Trivial File Transfer Protocol) : 17.3.7. Trivial File Transfer Protocol (TFTP) (UDP Port 69)

tftpd server : 17.3.7. Trivial File Transfer Protocol (TFTP) (UDP Port 69)

theft

7.1.1.1. A taxonomy of computer failures

12.2.6. Preventing Theft

12.2.6.4. Minimizing downtime

12.4.1.2. Potential for eavesdropping and data theft

of backups

12.3.2. Protecting Backups
12.3.2.4. Backup encryption

of RAM chips : 12.2.6. Preventing Theft

thieves : 11.3. Authors

third-party billing : 14.5.4. Physical Protection of Modems

Thompson, Ken

1.3. History of UNIX
8.6. The UNIX Encrypted Password System

threats

assessing cost of : 2.3.3. Adding Up the Numbers

back doors : (see back doors)

to backups

7.1.6. Security for Backups
7.1.6.3. Data security for backups

bacteria programs : 11.1.7. Bacteria and Rabbits

biological : 12.2.1.7. Bugs (biological)

broadcast storms : 25.3.2. Message Flooding

via CGI scripts : 18.2.3.2. Testing is not enough!

changing file owners : 5.7. chown: Changing a File's Owner

changing system clock : 5.1.5. File Times

code breaking

6.1.1. Code Making and Code Breaking
(see also cryptography)

commonly attacked accounts : 8.1.2. Default Accounts

computer failures : 7.1.1.1. A taxonomy of computer failures

decode aliases : 17.3.4.2. Using sendmail to receive email

deep tree structures : 25.2.2.8. Tree-structure attacks

denial of service

17.1.3. The /etc/inetd Program

17.3.21.5. Denial of service attacks under X

25. Denial of Service Attacks and Solutions

25.3.4. Clogging

accidental : 25.2.5. Soft Process Limits: Preventing Accidental Denial of Service

checklist for : A.1.1.24. Chapter 25: Denial of Service Attacks and Solutions

destructive attacks : 25.1. Destructive Attacks

disk attacks

25.2.2. Disk Attacks
25.2.2.8. Tree-structure attacks

overload attacks

25.2. Overload Attacks
25.2.5. Soft Process Limits: Preventing Accidental Denial of Service

system overload attacks : 25.2.1.2. System overload attacks

disposed materials : 12.3.3. Other Media

DNS client flooding : 16.3.2. Security and Nameservice

DNS nameserver attacks : 17.3.6.2. DNS nameserver attacks

DNS zone transfers : 17.3.6.1. DNS zone transfers

dormant accounts

8.4. Managing Dormant Accounts
8.4.3. Finding Dormant Accounts

false syslog entries : 10.5.3.1. Beware false log entries

filename attacks : 11.5.1.4. Filename attacks

hidden space : 25.2.2.7. Hidden space

HOME variable attacks : 11.5.1.3. $HOME attacks

identifying and quantifying

2.2.1.2. Identifying threats
2.2.2. Review Your Risks

IFS variable attacks : 11.5.1.2. IFS attacks

intruders : (see intruders)

letting in accidentally : 11.4. Entry

logic bombs

11.1.3. Logic Bombs
27.2.2. Viruses on the Distribution Disk

mailing list for : E.1.3.9. RISKS

media failure : 7.1.4. Guarding Against Media Failure

meet-in-the-middle attacks : 6.4.5.1. Double DES

MUD/IRC client programs : 17.3.23. Other TCP Ports: MUDs and Internet Relay Chat (IRC)

newly created accounts : 24.4.1. New Accounts

NIS, unintended disclosure : 19.4.5. Unintended Disclosure of Site Information with NIS

with NNTP : 17.3.13. Network News Transport Protocol (NNTP) (TCP Port 119)

open (guest) accounts

8.1.4. Open Accounts
8.1.4.6. Potential problems with rsh

PATH variable attacks : 11.5.1.1. PATH attacks

plaintext attacks : 6.2.3. Cryptographic Strength

playback (replay) attacks : 19.6.1.2. Using the ticket granting ticket

programmed

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

replay attacks : 17.3.14. Network Time Protocol (NTP) (UDP Port 123)

rsh, problems with : 8.1.4.6. Potential problems with rsh

sendmail problems : 17.3.4.1. sendmail and security

spoofed network connection : 8.5.3.1. Trusted path

start-up file attacks

11.5.2. Start-up File Attacks
11.5.2.7. Other initializations

system clock : (see system clock)

theft : (see theft)

/tmp directory attacks : 25.2.4. /tmp Problems

toll fraud : 14.4.1. One-Way Phone Lines

traffic analysis : 18.4. Avoiding the Risks of Eavesdropping

tree-structure attacks : 25.2.2.8. Tree-structure attacks

Trojan horses

4.3.5. Using su with Caution
11.1.4. Trojan Horses
11.5. Protecting Yourself
17.3.21.2. X security
19.6.5. Kerberos Limitations
27.2.2. Viruses on the Distribution Disk

trusted hosts : (see trusted, hosts)

unattended terminals

12.3.5. Unattended Terminals
12.3.5.2. X screen savers

unowned files : 24.4.1.8. Unowned files

vandalism

12.2.4. Vandalism
12.2.4.3. Network connectors

viruses

11.1.5. Viruses
(see viruses)

war and terrorism : 12.2.5. Defending Against Acts of War and Terrorism

weakness-finding tools : 11.1.1. Security Tools

by web browsers

18.5. Risks of Web Browsers
18.5.2. Trusting Your Software Vendor

worms : 11.1.6. Worms

three-way handshake (TCP) : 16.2.4.2. TCP

ticket-granting service

19.6.1.1. Initial login
19.6.1.2. Using the ticket granting ticket
19.6.1.3. Authentication, data integrity, and secrecy

tickets : (see Kerberos system)

Tiger : E.4.11. Tiger

tilde (~)

in automatic backups : 18.2.3.5. Beware stray CGI scripts
as home directory : 11.5.1.3. $HOME attacks
~! in mail messages : 8.1.3. Accounts That Run a Single Command

time

19.3.1.3. Setting the window

(see also NTP; system clock)

CPU, accounting

10.2. The acct/pacct Process Accounting File
10.2.3. messages Log File

defining random seed by : 23.8. Picking a Random Seed

modification

5.1.2. Inodes
5.1.5. File Times
7.4.7. inode Modification Times
9.2.2. Checklists and Metadata
24.5.1. Never Trust Anything Except Hardcopy

most recent login : 10.1.1. lastlog File

Secure RPC window of : 19.3.1.3. Setting the window

timeouts

11.1.3. Logic Bombs
23.3. Tips on Writing Network Programs

timesharing

19.6.5. Kerberos Limitations
23.2. Tips on Avoiding Security-related Bugs

Timezone table (NIS+) : 19.5.3. NIS+ Tables

tip command

10.3.1. aculog File
14.5. Modems and UNIX
14.5.3.1. Originate testing
14.5.3.3. Privilege testing
-l option : 14.5.3.1. Originate testing

TIS Internet Firewall Toolkit (FWTK) : E.4.12. TIS Internet Firewall Toolkit

TMOUT variable : 12.3.5.1. Built-in shell autologout

/tmp directory

14.5.3.3. Privilege testing
25.2.4. /tmp Problems

tmpfile function : 23.2. Tips on Avoiding Security-related Bugs

token cards : 8.7.2. Token Cards

token ring : 16.1. Networking

toll fraud : 14.4.1. One-Way Phone Lines

tools : 1.3. History of UNIX

to find weaknesses : 11.1.1. Security Tools

quality of

1.4.2. Software Quality
1.4.3. Add-On Functionality Breeds Problems

Totient Function : 6.4.6.1. How RSA works

tracing connections

24.2.4. Tracing a Connection
24.2.4.2. How to contact the system administrator of a computer you don't know

trademarks : 26.4.3. Trademark Violations

traffic analysis : 18.4. Avoiding the Risks of Eavesdropping

training : 13.2.1. Initial Training

transfer zones : 16.2.6.1. DNS under UNIX

transfering files : 15.1.1. uucp Command

Transmission Control Protocol (TCP) : 16.2.4.2. TCP

Transmit Data (TD) : 14.3. The RS-232 Serial Protocol

transmitters, radio : 12.2.1.8. Electrical noise

transposition (in encryption) : 6.1.2. Cryptography and Digital Computers

trap doors : (see back doors)

trashing : 12.3.3. Other Media

tree structures : 25.2.2.8. Tree-structure attacks

trimlog : E.4.13. trimlog

Triple DES

6.4.5. Improving the Security of DES
6.4.5.2. Triple DES

Tripwire package

9.2.4. Tripwire
9.2.4.2. Running Tripwire
19.5.5. NIS+ Limitations
E.4.14. Tripwire

Trivial File Transfer Protocol (TFTP) : 17.3.7. Trivial File Transfer Protocol (TFTP) (UDP Port 69)

Trojan horses

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

truncate system call : 5.1.7. File Permissions in Detail

trust

1.1. What Is Computer Security?
2.1.1. Trust
27. Who Do You Trust?
27.4. What All This Means
of log files : 10.8. Managing Log Files

trusted

8.5.3.2. Trusted computing base

17.1.1. The /etc/services File

hosts

17.3.18.1. Trusted hosts and users
17.3.18.4. The ~/.rhosts file
NFS and : 17.3.18.2. The problem with trusted hosts

path : 8.5.3.1. Trusted path

ports : 1.4.3. Add-On Functionality Breeds Problems

users

17.3.4.1. sendmail and security
17.3.18.1. Trusted hosts and users

TRW Network Area and System Administrators : F.3.4.36. TRW network area and system administrators

tty file : 7.1.2. What Should You Back Up?

ttymon program : C.5.2. Logging In

ttys file

8.5.1. Secure Terminals
14.5.1. Hooking Up a Modem to Your Computer

ttytab file : C.5.1. Process #1: /etc/init

ttywatch program : 24.2.3. Monitoring the Intruder

tunefs command : 25.2.2.6. Reserved space

tunneling : 16.4.1. IPX

twisted pair : 16.1. Networking

TZ variable : 23.2. Tips on Avoiding Security-related Bugs

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