On Sep 12, 2006, at 4:45 PM, Chuck Swiger wrote:
On Sep 12, 2006, at 1:37 PM, Bart Silverstrim wrote:
Better to use something like:
ipfw add 1 log tcp from any to me 25 setup
If Bart would like to use tcpdump for the same purpose, consider
running something like:
tcpdump -nt 'port 25 and (tcp[tcpflags] & tcp-syn != 0)'
Maybe my ipfw is old; it kept telling me that "log" is an invalid
action. However, I think I may be able to get the tcpdump idea to
work.
There's a kernel option you need to enable for IPFW to do logging.
If you're kldload'ing the ipfw module, it probably wasn't compiled
with IPFW_LOGGING or whatever the exact name is.
I had set the verbosity (I think that was the parameter) from
googling around earlier, but that doesn't seem to help. I'm probably
missing an option somewhere else.
But you're right...tcpdump will be my friend :-)
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