Hi,everybody,

        I am now exploring to design an architecture of Protocol Analysis about SIP.I 
am puzzled by SIP Packet Gathering.I can get the TCP and UDP packet,however,how can i 
distinguish which packet is SIP packet? I have thought about two ways to deal with it:
    one is:
    From the RFC3261:"It is also RECOMMENDED that a server   listen for requests on 
the default SIP ports (5060 for TCP and UDP,   5061 for TLS over TCP) on all public 
interfaces." can i abstract SIP packet only by port?
        the other is :
        For every packet passed from TCP/UDP,abstract it depending on the format of 
its startline. 

        Thanks !

                                        

        WangPan
[EMAIL PROTECTED]
          2003-10-14




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