analyze traffic remotely over ssh w/ wireshark

ssh 'tshark -f "port !22" -w -' | wireshark -k -i -
This captures traffic on a remote machine with tshark, sends the raw pcap data over the ssh link, and displays it in wireshark. Hitting ctrl+C will stop the capture and unfortunately close your wireshark window. This can be worked-around by passing -c # to tshark to only capture a certain # of packets, or redirecting the data through a named pipe rather than piping directly from ssh to wireshark. I recommend filtering as much as you can in the tshark command to conserve bandwidth. tshark can be replaced with tcpdump thusly: ssh tcpdump -w - 'port !22' | wireshark -k -i -

By: markdrago
2009-12-17 23:03:24

8 Alternatives + Submit Alt

What Others Think

This work for me but you must to install tshark on the remote machine and wireshark on the local machine and the "port !22" gets an error, I try without the "!" and runs. In my Ubuntu Server I must include the "sudo" command. I use like this for the webtrafic: ssh user@remotehost 'sudo tshark -f "port 80" -w -' | wireshark -k -i - Thanks!
kutus · 630 weeks and 5 days ago
same as here but add `-Fpcap` to the remote `tshark`. Got error from wireshark about not accepting pcapng in stdin
nhed · 203 weeks and 3 days ago

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Any thoughts on this command? Does it work on your machine? Can you do the same thing with only 14 characters?

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