Extracting information about streams from pcap

[David <lists@edeca.net>]

Hi,

I have a large pcap file that I would like to extract overview 
stream/packet information from.  I would like data about TCP, UDP and 
ICMP in the following format:
src_ip, dst_ip, src_port, dst_port, protocol, packets, time
(obviously some fields aren't relevant for some protocols)

I have seen a number of tools but many seem to be based around TCP 
streams only.  I have no problem wrapping awk around a program to 
generate the right output, but a C/Python library might be more help.
Any ideas?

David


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