Spake Matthew Rogers on Wednesday, January 23, 2008 at 03:02PM -0500:
> I just wrote an anti-spam tool that can key off anything in syslog to block
> crackers from dictionary attacking / being annoying. I got tired of seeing
> Relay Denied Requests 1000's of times a day on my servers so I wrote this
> program.
> It uses iptables to just drop cracker traffic... GPL if anyone wants to
> contribute, I'm going to have the next version have a sync capability and
> maybe something else and a better way to config other than opening up the
> program source.
I notice you have a blog. Would you like me to add you to much-neglected "planet slug"
aggregator? (http://hardison.net/slug/planet/)
Nice idea!
There's a few issues: Your script is using Windows/DOS line endings (\r\n)
instead of unix line endings, which means it will not run if you execute it as a
script (./denythem.pl).
The only other issue I notice is that you're using system(STRING) rather than
system(LIST). If you're aware of the difference, that's okay, but incase you are
not: system("magic pants") executes the string using the system's shell (/bin/sh
typically), where as system("magic", "pants") executes the "magic" executable
(presumably somewhere in your $PATH) with one argument: "pants".
There's nothing terribly wrong with using /bin/sh, but if you're not careful
sanitizing input, interesting things can happen.
--
Govern a great nation as you would cook a small fish. Don't overdo it.
-- Lao Tsu
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GPG Fingerprint: 412C CCE9 DDA2 4FE9 C34F 754B 0863 0EA6 712E BBE1
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