[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] I/O  [See input/output, portable library] ICMP (Internet Control Message Protocol)  2nd  3rd  Icove, David (Computer Crime: A Crimefighter's Handbook)  id command  IDEA (International Data Encryption Algorithm)  ident daemon  2nd  identd daemon  Identification Protocol  identifiers  2nd  [See also GIDs; UIDs; usernames] Idora (Gibson, William)  IDS (intrusion detection system)  IEEE Computer Society  IFIP Technical Committee 11  IFS variable  2nd  3rd  IGMP (Internet Group Management Protocol)  IM (Instant Messaging)  IMAP (Internet Message Access Protocol)  imap service  IMAPS (secure IMAP)  immutable files  in.named daemon  incremental backup  indecency laws  index nodes  [See inodes] industrial spies  inetd program  2nd      -t (trace) option      back doors in      configuration changes in      denial of service attacks with      replacing with tcpserver program      TCP Wrappers and  2nd      throttle for  inetd.conf file  2nd  3rd  4th  5th  information     as an asset      availability of      confidentiality of  [See confidentiality]     disclosed by programmed threats      integrity of  [See integrity]     owners of  Information Security  Information Systems Security Association (ISSA)  information warfare researchers  InfoSecurity News (SC Magazine)  init process  init program  initialization errors  initialization files, system  inittab file  inittab program  2nd  inodes      change time  [See ctime]     detecting changes in      for device files      running out of, as overload attack  input/output (I/O), portable library  insects, effects on hardware  Insecure.org web site  installation     cables      new Unix system      software, logging  Instant Messaging (IM)  insurance     actions against intruders required to recover losses      contingency plans for break-ins and      coverage for business interruption      coverage for damage by law enforcement      data on probability of loss  2nd      filing claims with      identifying coverage  2nd      inventory required to recover losses from      log files helping recover losses      of personnel from outside agency      security policy required to recover losses  integrity  2nd  3rd      append-only files and      detecting changes to data      immutable files and      importance of      Kerberos and      kernel security levels and      LDAP and      NFS and      read-only filesystems and      Samba and      security checklist for      software for checking      tools for checking  International Data Encryption Algorithm (IDEA)  International Federation for Information Processing, Technical Committee 11  International Information Systems Security Certification Consoritium, Inc. (ISC)2  Internet      addresses  [See IP addresses]     domain as NIS domain      firewalls  [See firewalls]     history of  2nd      pornography and      programmed threats coming from      security and      security of Unix systems on  Internet Control Message Protocol  [See ICMP] Internet daemon  [See inetd program]2nd  [See inetd program] Internet Group Management Protocol (IGMP)  Internet Message Access Protocol (IMAP)  Internet Packet Exchange (IPX)  Internet Protocol  Internet Relay Chat (IRC)  Internet Security Scanner  [See ISS] Internet servers      books about      bringing up securely      controlling access to      inetd starting      location of      restricted filesystems and      startup of      types of  Internet Service Provider (ISP), finding information about  Internet services  [See network services] Internet Society  Internet worm program  Internetworking with TCP/IP (Comer, Douglas E.)  intruders  2nd  [See also break-ins; hackers]     authors of programmed threats      case studies of      contacting  2nd      discovering      getting rid of      monitoring      recovering from damage by      tracing connection of      tracking through log files  Intrusion Detection (Bace, Rebecca)  intrusion detection system (IDS)  investigations of employees  ioctl() system call  IP addresses      controlling access by      determining from hostnames      finding information about      monitoring for security      name service and  IP networks  2nd  [See also TCP/IP networks]     alternatives to      attacks on  2nd      authentication for, improving      decoy systems for      encryption and      firewalls for      hardening against attacks      physical isolation of  IP packets  2nd      eavesdropping      monitoring      sniffing  2nd  IP protocols  IP spoofing  2nd  3rd  ipchains program  2nd  ipf program  ipfilter program  ipfirewall program  ipfw program  2nd  3rd  IPsec  iptables program  2nd  IPv4 (IP Version 4)  IPv6 (IP Version 6)  IPX (Internet Packet Exchange)  IRC (Internet Relay Chat)  ISO 9660 filesystem  ISP (Internet Service Provider), finding information about  ISS (Internet Security Scanner)  2nd  ISSA (Information Systems Security Association)