tcpdump of a telnet session
 

Hi,

I need to produce a tcpdump of a telnet session (up until the login screen) and need a few pointers in how to set up the filters so that i only get the the telnet session packets and nothing else.

Any help would be apperated,

Thanks

You could use ethereal instead and click "follow TCP connection", much easier.

Just like the man page says:


tcpdump -i <your interface> port 23

or, if you know the source IP:

tcpdump -i <your interface> host <sourceIP> and port 23

Those will only get you headers though. If you want the contents, you can do:

tcpdump -XX -s 0 -i <your interface> host <sourceIP> and port 23