[SYMBOL] [A] [B] [C] [D] [E] [F] [G] [H] [I] [J] [K] [L] [M] [N] [O] [P] [Q] [R] [S] [T] [U] [V] [W] [X] [Y] [Z] L-devices file  Lai, Xuejia ("On the Design and Security of Block Ciphers")  LaMacchia, Brian A.      "Computation of Discrete Logarithms in Prime Fields"  LANs (Local Area Networks)  2nd  3rd  laptops     locking      recovery from theft      ruggedized      tagging      temperature of      theft prevention for      vibration protection for  last program  2nd  3rd  4th  lastcomm program  2nd  lastlog file  2nd  laws  [See legal issues] LDAP (Lightweight Directory Access Protocol)  2nd  3rd  4th      authentication with      data integrity and      nss_ldap configuration      protocol for      reliability and      TLS support for      using with Kerberos      using with PAM      versions of  Learning Perl (Schwartz, Randal L. and Phoenix, Tom)  leased telephone lines  least privilege principle  2nd  legal issues     access device limitations      avoiding computer abuse      backups      comparison copies and      compromised networks, risks of being prosecuted for      copyright laws  2nd      criminal complaints, filing      criminal prosecution, disadvantages of      federal laws regarding computer crimes      jurisdiction for computer crimes      law enforcement, wiretapping by      license agreements for worms      monitoring intruders      pornography, indecency, obscenity      published resources on      recourses after a break-in      responsibilities to report crime      security checklist for      situations requiring legal action  Lenstra, Arjen      "The Number Field Sieve"  Lenstra, H. W., Jr. ("The Number Field Sieve")  Lesk, Mike  level-zero backup  Leveson, Nancy G. (Safeware: System Safety and Computers. A Guide to Preventing Accidents and Losses  Levy, Steven (Hackers: Heroes of the Computer Revolution)  Leyland, Paul  /lib directory  Libes, Don  license agreements, comparison copies and  lie-detector tests, of employees  lightning  2nd  Lightweight Directory Access Protocol  [See LDAP] limit command  LINK function (RPC)  link-level encryption  links  2nd  [See also symbolic links]     to directories      static  Linux  2nd  [See also System V Unix]     "no dump" file attribute      ACL support for      append-only files      bug fixes, responsibility for      capabilities system      chattr() system call      chroot wrapper      Cryptfs support for      current trends      debugfs command      default accounts for      exim mailer program for      expiring accounts      exporting NFS directories      ext2fs filesystem  2nd  3rd      FIFO file type      filesystem UID (FSUID)      filesystem, minfree amount      filesystems      group disk quotas      for handheld computers      history of  2nd      host-based firewall for  2nd      immutable files      Kerberos client for      kernel security levels      logrotate program      mobile versions of      npasswd package      Openwall patches      packaging tools      PAM         resource limits          support for      periodic security-checking scripts      portmapper program      portmon variable      process accounting with      ps command      published resources on      Red Hat  [See Red Hat Linux]     reliability of      RPM Package Manager  2nd      S/Key support      secure terminals      secure versions of      server startup on      shadow password file      smbfs support      software quality      source packages      stateful inspection program      sudo program  2nd      sulog, scanning      swapping to files      TCP Wrappers support      ttywatch program      VA  [See VA Linux]     versions of  2nd      X security  Littman, Jonathan (The Fugitive Game: Online with Kevin Mitnick)  Liu, Cricket (DNS and BIND)  ln command  load shedding  local area networks  [See LANs] LOCAL authentication (NIS+)  local jurisdiction  local storage, protecting  lock program  lock-down  locking accounts  locking files  2nd  locks, hardware  log books  log events  log files  [See also history files; email, logging]2nd      access_log      acct      aculog      analysis tools      analyzing for intruders      created during initialization      crontab      hardcopy of  2nd      immutable      lastlog      list of      locations of      loginlog      managing      messages      pacct      rotating      sulog  2nd      syslog creating      system clock and  2nd      utmp  2nd  3rd      wtmp      wtmpx  log server  logcheck program  logdaemon package  logger program  2nd  logging  2nd  3rd  4th  [See also forensics; log files]     across networks      break-ins      C2 audit      criminal investigations, and      critical messages from      failed passwords      failed su attempts      from third-party software      handwritten logs      to hardcopy device      individual users      network services      newsyslog program      outgoing mail      policy for      process accounting      security checklist for      Swatch program      syslog facility      what not to log      who is logged in  logging in      authentication of      failed attempts, logging      FTP          access without      Kerberos system      preventing for dormant accounts      recorded in log file      restricting      with Secure RPC      startup file attacks  logging out     automatic      with Secure RPC  logic bombs  2nd  3rd  login file  .login file  2nd  login program  2nd      back doors in      trusted path for  login service  logindevperm file  loginlog file  2nd  3rd  logins command  .logout file  long distance service  LOOKUP function (RPC)  loopback encryption  losses  [See also disaster planning]     calculating cost of      calculating cost of prevention      determining whether to protect against      estimating probability of  lp user  lpd system  lrand48() system call  ls command  2nd      -d option      -i option      -c option      file permissions listed by      file times displayed by      -H option      indicating SUID/SGID programs      -l option      listing files with control characters  lsof command  2nd  3rd  4th  5th  6th  lstat() system call