tools to audit SIP based VoIP systems

 SIPVicious suite is a set of tools that can be used
 to audit SIP based VoIP systems. This suite has five
 tools: svmap, svwar, svcrack, svreport, svcrash.
 .
 svmap is a sip scanner. When launched against ranges
 of ip address space, it will identify any SIP servers
 which it finds on the way.
 .
 svwar identifies working extension lines on a PBX.
 Also tells you if extension line requires authentication or not.
 .
 svcrack is a password cracker making use of digest authentication.
 It is able to crack passwords on both registrar servers and proxy
 servers.
 .
 svreport is able to manage sessions created by the rest of the tools
 and export to pdf, xml, csv and plain text.
 .
 svcrash responds to svwar and svcrack SIP messages with a message
 that causes old versions to crash.