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 <[email protected]>
  "We have more to fear from the bungling of the incompetent than from
the machinations of the wicked."  - from Slashdot
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