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network-programmingtcpdump

Monitoring multiple ports in tcpdump

I am trying to find a way to read multiple ports using tcpdump. Suppose I have two ports, p1 and p2, and I want to read the traffic moving through both ports simultaneously. Is there any way to do it using tcpdump or will I have to use some other tool?

Basically I am running a proxy server which is running on some port. I want to read the traffic moving through this port as well traffic moving through port 80(HTTP).

Solution 
  • tcpdump port 80 or port 3128

    or, alternatively,

    tcpdump port '(80 or 443)'