Title: Tethereal - using capture filters for SIP calls
Anyone:
I am using tethereal for troubleshooting SIP calls. As there are loads of UDP/SIP calls coming from the same IP, I would like to capture with some filter in order to isolate the call I want to see.
I believe the best way is to filter at SIP level and capture only those packets containig a specific text string (the calling or called number for example) in the SIP headers. This will do.
Q1: how can I do this?
Q2: will it affect the performane of the Server as tethereal need to open every SIP packet?
Regards,
Juan
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