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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)