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Index: L
- L-devices file
: 14.5.1. Hooking Up a Modem to Your Computer
- L.cmds file : 15.4.3. L.cmds: Providing Remote Command Execution
- L.sys file : 15.3.3. Security of L.sys and Systems Files
- Lai, Xuejia : 6.4.1. Summary of Private Key Systems
- laid-off employees : 13.2.6. Departure
- LaMacchia, Brian : 19.3.4. Limitations of Secure RPC
- LANs (local area networks)
- L.cmds file : 15.4.3. L.cmds: Providing Remote Command Execution
- laptop computers
: 12.2.6.3. Portables
- last program
- lastcomm program
- lastlog file
: 10.1.1. lastlog File
- laws
- 26. Computer Security and U.S. Law
- 26.4.7. Harassment, Threatening Communication, and Defamation
- backups and : 7.1.7. Legal Issues
- checklist for : A.1.1.25. Chapter 26: Computer Security and U.S. Law
- copyright
- 26.4.7. Harassment, Threatening Communication, and Defamation
- criminal prosecution
- Electronic Communications Privacy Act (ECPA)
: 26.2.3. Federal Computer Crime Laws
- encryption
- enforcement agencies
: 14.4.4.1. Kinds of eavesdropping
- export
- federal enforcement
- indecent material
: 26.4.5. Pornography and Indecent Material
- liability
- monitoring keystrokes
: 24.2.3. Monitoring the Intruder
- non-citizen access : 26.4.1. Munitions Export
- patents : 26.4.4. Patent Concerns
- for portable computers : 12.2.6.3. Portables
- resources on : D.1.1. Other Computer References
- search warrants
- non-citizen access : 26.4.1. Munitions Export
- smoking
: 12.2.1.2. Smoke
- state and local enforcement : 26.2.1. The Local Option
- trademarks : 26.4.3. Trademark Violations
- vendor liability : 18.5.2. Trusting Your Software Vendor
- state and local enforcement : 26.2.1. The Local Option
- 26. Computer Security and U.S. Law
- lawsuits (civil)
: 26.3. Civil Actions
- leased telephone lines : 14.5.4. Physical Protection of Modems
- least privilege
- leased telephone lines : 14.5.4. Physical Protection of Modems
- Lee, Ying-Da
: 22.4. SOCKS
- Lesk, Mike
- liability, legal
- /lib directory
: 11.5.3.6. Other files
- license agreements : 18.5.2. Trusting Your Software Vendor
- comparison copies and : 9.2.1. Comparison Copies
- lie-detector tests
: 13.1. Background Checks
- lightning
- limit command
: 25.2.5. Soft Process Limits: Preventing Accidental Denial of Service
- Limit command (<Directory>) : 18.3.2. Commands Within the <Directory> Block
- limited user access : 8.1.5.1. Limited users
- link-level security : 16.3.1. Link-level Security
- links
- Limit command (<Directory>) : 18.3.2. Commands Within the <Directory> Block
- encryption of
: 18.4.1. Eavesdropping Over the Wire
- link-level security : 16.3.1. Link-level Security
- static : 23.4. Tips on Writing SUID/SGID Programs
- symbolic, following (Web)
- link-level security : 16.3.1. Link-level Security
- encryption of
: 18.4.1. Eavesdropping Over the Wire
- lint program
: 23.2. Tips on Avoiding Security-related Bugs
- LINUX operating system
- 1.3. History of UNIX
- 3.3. Entering Your Password
- 23.1.2.1. What they found
- ext2 filesystem : 25.2.2.6. Reserved space
- random number generators : 23.7.4. Other random number generators
- 3.3. Entering Your Password
- 1.3. History of UNIX
- Live Script
: 18.5.2. Trusting Your Software Vendor
- load shedding : 23.3. Tips on Writing Network Programs
- local
- load shedding : 23.3. Tips on Writing Network Programs
- area networks (LANs)
- authentication (NIS+)
: 19.5.4. Using NIS+
- law enforcement : 26.2.1. The Local Option
- storage
- law enforcement : 26.2.1. The Local Option
- users, and USERFILE : 15.4.1.2. USERFILE entries for local users
- lock program
: 12.3.5.2. X screen savers
- locked accounts : 3.3. Entering Your Password
- locking files : 23.2. Tips on Avoiding Security-related Bugs
- log files
- locked accounts : 3.3. Entering Your Password
- 11.5.3.5. System initialization files
- (see also logging)
- access_log
- (see also logging)
- aculog
: 10.3.1. aculog File
- agent_log file : 18.4.2. Eavesdropping Through Log Files
- backing up : 10.2.2. Accounting with BSD
- lastlog : 10.1.1. lastlog File
- managing : 10.8. Managing Log Files
- manually generated
- agent_log file : 18.4.2. Eavesdropping Through Log Files
- per-machine
: 10.7.2. Per-Machine Logs
- per-site : 10.7.1. Per-Site Logs
- refer_log file : 18.4.2. Eavesdropping Through Log Files
- sulog : (see sulog file)
- system clock and : 17.3.14. Network Time Protocol (NTP) (UDP Port 123)
- tracking intruders with : 24.3. The Log Files: Discovering an Intruder's Tracks
- /usr/adm/messages : 10.2.3. messages Log File
- utmp and wtmp
- per-site : 10.7.1. Per-Site Logs
- uucp
: 10.3.4. uucp Log Files
- /var/adm/acct : 10.2. The acct/pacct Process Accounting File
- /var/adm/loginlog : 10.1.4. loginlog File
- of Web servers : 18.4.2. Eavesdropping Through Log Files
- xferlog : 10.3.3. xferlog Log File
- /var/adm/acct : 10.2. The acct/pacct Process Accounting File
- 11.5.3.5. System initialization files
- logdaemon package
: 17.3.18.5. Searching for .rhosts files
- logger command : 10.5.3. syslog Messages
- logging
- logger command : 10.5.3. syslog Messages
- 7.1.1.1. A taxonomy of computer failures
- 10. Auditing and Logging
- 10.8. Managing Log Files
- 11.5.3.5. System initialization files
- 21.5. Special Considerations
- 23.2. Tips on Avoiding Security-related Bugs
- (see also log files)
- across networks : 10.5.2.2. Logging across the network
- archiving information : 7.4.2. Simple Archives
- breakins : 24.1.2. Rule #2: DOCUMENT
- C2 audit : 10.1. The Basic Log Files
- checklist for : A.1.1.9. Chapter 10: Auditing and Logging
- critical messages
- 10. Auditing and Logging
- downloaded files
- failed su attempts
: 4.3.7. The Bad su Log
- file format : 8.2. Monitoring File Format
- files transferred by FTP : 10.3.3. xferlog Log File
- to hardcopy device : 10.5.2.1. Logging to a printer
- individual users
- file format : 8.2. Monitoring File Format
- manually
- mistyped passwords
: 10.5.3. syslog Messages
- network services : 10.3.6. Logging Network Services
- outgoing mail : 10.4.2. Mail
- potentially criminal activity : 26.2.6. Other Tips
- Swatch program
- network services : 10.3.6. Logging Network Services
- syslog facility
- UUCP
: 10.3.4. uucp Log Files
- what not to log : 10.5.3. syslog Messages
- 7.1.1.1. A taxonomy of computer failures
- logging in
- C.5. Starting Up UNIX and Logging In
- C.5.3. Running the User's Shell
- FTP access without : 17.3.2.7. Allowing only FTP access
- Kerberos system : 19.6.1.1. Initial login
- last program
- C.5.3. Running the User's Shell
- lastlog file
: 10.1.1. lastlog File
- passwords : 3.3. Entering Your Password
- preventing
- passwords : 3.3. Entering Your Password
- restricting
: 8.3. Restricting Logins
- with Secure RPC : 19.3.3. Using Secure RPC
- startup file attacks
- with Secure RPC : 19.3.3. Using Secure RPC
- C.5. Starting Up UNIX and Logging In
- logging out with Secure RPC[logging out:Secure RPC]
: 19.3.3. Using Secure RPC
- logic bombs
- .login file
- login program
- logindevperm file
: 17.3.21.1. /etc/fbtab and /etc/logindevperm
- loginlog file : 10.1.4. loginlog File
- logins
- loginlog file : 10.1.4. loginlog File
- authentication
: 17.3.5. TACACS (UDP Port 49)
- FTP : 17.3.2. (FTP) File Transfer Protocol (TCP Ports 20 and 21)
- UUCP, additional : 15.3.1. Assigning Additional UUCP Logins
- FTP : 17.3.2. (FTP) File Transfer Protocol (TCP Ports 20 and 21)
- authentication
: 17.3.5. TACACS (UDP Port 49)
- logins command : 8.1.1. Accounts Without Passwords
- -d option
: 8.2. Monitoring File Format
- -p option : 8.2. Monitoring File Format
- -d option
: 8.2. Monitoring File Format
- LOGNAME= command
- .logout file
: 19.3.3. Using Secure RPC
- long distance service
- losses, cost of preventing
- lp (user)
: 4.1. Users and Groups
- lpd system : 17.3.18.6. /etc/hosts.lpd file
- lrand48 function : 23.7.3. drand48 ( ), lrand48 ( ), and mrand48 ( )
- ls command
- lpd system : 17.3.18.6. /etc/hosts.lpd file
- 5.1.4. Using the ls Command
- 5.1.5. File Times
- 9.2.2. Checklists and Metadata
- -c option : 5.1.5. File Times
- -d option : 9.2.2.1. Simple listing
- -e option : 5.2.5.1. AIX Access Control Lists
- -F option : 5.1.4. Using the ls Command
- -g option : 5.1.4. Using the ls Command
- -H option : 5.9.2. Context-Dependent Files
- -i option : 9.2.2.1. Simple listing
- -l option
- 5.1.5. File Times
- -q option
: 5.4. Using Directory Permissions
- -u option : 5.1.5. File Times
- -c option : 24.4.1.6. Changes to startup files
- -H option : 24.4.1.7. Hidden files and directories
- -l option : 24.4.1.6. Changes to startup files
- -u option : 5.1.5. File Times
- 5.1.4. Using the ls Command
- lsacl command
: 5.2.5.2. HP-UX access control lists
- lsof program : 25.2.2.7. Hidden space
- lstat function : 23.2. Tips on Avoiding Security-related Bugs
- Lucifer algorithm
- lsof program : 25.2.2.7. Hidden space
- LUCIFER cipher : 6.4.4. DES
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