F

FIN flag, 39

FIN packets, 3940

firewalls

Asterisk, 338, 341, 346

Avaya Communication Manager, 286287

SIP. See SIP firewalls

VoIP/SIP, 480

firmware

buffer overflows, 138

IP phones, 319

vulnerabilities in, 146

flags, 3941

flooding attacks, 130136

applications, 133

ARP entries, 152, 154

Asterisk, 339340

Avaya server, 296308

CCM, 240241

described, 390

DNS floods, 146

DoS, 130136, 146

established connections, 133

ICMP, 133

illustrated , 391, 393

INVITE floods, 395414, 420427

inviteflood tool, 395411, 420427, 470

junotcpsynflood tool, 296304

MAC addresses, 152154, 155

packet floods, 130

references, 146

rtpflood tool, 418419

SYN flood attacks, 10, 132133, 146

targeted flooding, 134135

TCP SYN flood attacks, 132133, 410411, 424426

UDP floods. See UDP flooding attacks

VLANs, 136

footprinting, 727

described, 8

DNS analysis, 2327

Google VoIP hacking, 1822

methodology, 1027

overview, 810

public web site research, 1117

WHOIS research, 2327

format string vulnerabilities, 373374

fping tool, 33

fragrouter tool, 182183

functional protocol testing, 370

fuzzing. See also VoIP fuzzing

described, 137, 370371

malformed packets, 136137

overview, 375383

reasons for, 375

stress testing, 136137