use -i <interface name> ex. tcpdump -i eth0 port 4957 -nn -vv etc.
man tcpdump for more options.
-- Andrei
2010/2/20 Hadi Motamedi motamedi24@hotmail.com
Dear All I have put tcpdump trace on port 4957 on my CentOS server , as the following : #tcpdump port 4957 I want to obtain the payload data to see what is realy being exchanged between my CentOS server and the outside network element . Can you please let me know how I can modify my command ? Thank you
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