[plug] any advice

Daniel Pittman daniel at rimspace.net
Fri Aug 6 15:03:10 WST 2010


"Jon L Miller" <jlmiller at mmtnetworks.com.au> writes:

> I did a capture on the mailserver and this is what one of the streams
> produced.

[...]

> Question is how I can find which PC this is coming from? using netstat can I
> grep it to show only information that has port 25?

  tcpdump -ni eth0 port 25

Substitute the appropriate network interface, of course, but that will show
one line for each packet to or from a machine on port 25, which is visible on
that network port on the server running it.

Regards,
        Daniel

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✣ Daniel Pittman            ✉ daniel at rimspace.net            ☎ +61 401 155 707
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