I

IAX channels, 346347

IAX enumeration, 338

IAX (Inter-Asterisk eXchange) protocol, 325

ICMP (Internet Control Message Protocol), 32, 133

ICMP flooding attacks, 133

ICMP packets, 3337

ICMP ping sweeps , 3337

ICMP traffic, 3337

ICMP_ECHO REQUEST packets, 36

icmpenum tool, 37

icmpquery tool, 37

icmpush tool, 37

IEEE (Institute of Electrical and Electronics Engineers), 34

IIS web server, 245

information gathering. See footprinting

instant messaging clients , 359362

Institute of Electrical and Electronics Engineers (IEEE), 34

integer overflow, 375

interactive voice response. See IVR

Inter-Asterisk eXchange. See IAX

interception attacks, 167200

ACM, 311

application-level, 185199

ARP poisoning , 120, 156, 169185

Asterisk, 343

CCM, 245250

man-in-the-middle. See MITM attacks

references, 200

via VoIP signaling manipulation, 168

International Alliance of Avaya Users, 20

International Nortel Networks Users Association, 20

International Telecommunication Union, 123

Internet Control Message Protocol.     See ICMP

Internet search engines. See search engines

Inter-Switch Link. See ISL

INVITE floods, 395414, 420427

INVITE requests

breaking authentication, 441, 443444

described, 58

flooding SIP proxies with, 395414

redirection attacks, 456458

registration removal, 434

username enumeration, 7883

INVITE scanning, 7883, 9093, 95

INVITE username enumeration, 7883

inviteflood tool, 395411, 420427, 470

IP addresses. See also MAC addresses

ACM, 265, 269274

pinging. See pinging

researching , 2327

spoofing, 133

TFTP servers, 3, 20, 21

IP PBXs. See PBXs

IP phones. See phones

IP source guard (IPSG), 246, 247

IP Stack Integrity Checker (ISIC), 137

IPSEC encryption, 164

IPSG (IP source guard), 246, 247

ISIC (IP Stack Integrity Checker), 137

ISL (Inter-Switch Link), 154

ISL tagging attack, 155

ISO image, 484

IVR phishing system, 510515

IVR (interactive voice response) system, 510515