Messages in this thread | | | Date | Wed, 27 Jun 2007 16:02:14 -0400 | From | Bill Davidsen <> | Subject | Re: How would I do this? (expert tricks) OT |
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Marc Perkel wrote: > I have a server with port 25 closed. I was to be able > to run a script every time someone tries to connect to > port 25, but from the outside the port remains closed. > I need the script that I'm going to run get the IP > address that tried to connect. > > I know it's off topic but it's part of an experiment > to stop spam.
Put a rule in iptables to jump to a user table to do a log and drop. You are doing it the wrong way, you want to set syslog to write the log message to a FIFO and have a permanent running program reading it (I do just this for other things).
Alternatively you can use redirect to send it to a program of your choosing, which can run a script if you really want to. Beware that rate limiting is desirable if you are going to start a process for ANY type of attack packets.
-- Bill Davidsen <davidsen@tmr.com> "We have more to fear from the bungling of the incompetent than from the machinations of the wicked." - from Slashdot - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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