Index
I
Identification protocol (Ident) port scan, 221-222
IEEE 802.1q VLANs, 48, 50
IEEE 802.2 LLC networks, 48, 51
IEEE 802.2 LLC/SNAP, 51
IEEE 802.3 headers, 51-52
information gathering, 5, 10, 91
init.c, in Firewalk security tool, 383-387
initialization and execution functions, 13-16, 93-95
Institute of Electrical and Electronics Engineers (IEEE), 22
interfaces, 15-16, 36, 130-131, 133, 138-140, 259
internal data correlation, 4
International Traffic in Arms Regulations (ITAR), 165
Internet control message protocol (ICMP)ECHO and, 228-231
Firewalk security tool and, 335, 344, 363-364, 366-367
firewalls and, 301
IP expiry and, 228-231
libdnet library and, 57-60
packet sniffing and, 195-196
Scoop packet sniffing sample program for, 199-215
Internet Engineering Task Force (IETF), SSL standardization and, 294
Internet generic message protocol (IGMP), firewalls and, 301
Internet protocol (IP), 18
Clutch sample program using libdnet functions, 147-162
fingerprinting and libsf functions in, 117-118
Firewalk security tool and, 347
IP expiry in, 225-239
libdnet library and, 42-45, 60-62, 129-130, 133, 141-143
libnids library and defragmentation of, 88, 91, 95
libpcap library and, 18
port scanning and, 225
Scoop packet sniffing sample program for, 199-215
vulnerability scanners and scanning in, 259
Internet relay chat (IRC), 96
Internet Software Consortium, 274
intrusion detection (see network intrusion detection)IP addresses (see 225-239, 327-412
IPv4, Firewalk security tool and, 346, 366-367
IPv6, libdnet library and, 44, 62-63