Every time I use Wireshark, I must search for the filter usage in google. A professional or commercial tool won’t bring its customer into such an awkward situation. The screenshot below shows a typical SIP-initiated conversation lasting about 20 seconds: Calls can fail for the most obscure reasons. To do this, select VoIP Calls from the Telephony menu, choose a call, and click on Flow. ip.addr=xx.xx.xx.xx is used to filter those packets whose source ip OR destination ip is the specified one so it gets more results than ip.dst and ip.src.įrom this example, we can safely tell that wireshark is indeed an amateur tool. Inspecting the traffic flows for a call as it is set up, connected, and torn down is easy using Wireshark. You may know other green syntax like ip.dst=xx.xx.xx.xx (not ip.dst.addr=xx.xx.xx.xx)and ip.src=xx.xx.xx.xx(not ip.src.addr=xx.xx.xx.xx), but they are used to filter the packets whose destination ip address/source ip address is the specified one. The correct one is: ip.addr=xx.xx.xx, NOT ip.address=xx.xx.xx.xx, not ip.addr=xx.xx.xx.xx,not ip.addr:xx.xx.xx.xx. Do you know how to filter packets belong to specific ip address?Īll the above are wrong, even the last one is green in the filter edit box. If you ask me what part of wireshark is the most difficult to learn, I would say it is the filter.
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