In this recipe we will capture SIP authentication traffic using a program included as a part of the SIPCrack suite of tools called SIPDump. SIPDump is a SIP login sniffer/cracker designed to capture the digest authentication information off the network. When used in conjunction with its partner tool, SIPCrack, we can not only capture login information but we can crack the files created with SIPDump.
The following requirements need to be fulfilled:
Let's begin the capturing of SIP authentications using SIPDump: