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On Thu, 15 May 2008, Nowlin, Dan wrote:
It is a perl script that runs as a service. It monitors your security
log or whatever log sshd reports to for invalid login attempts. If it
detects X number of invalid login attempts from the same IP then it puts
that IP in a blacklist in iptables. It also keeps a log of how long
that IP has been blocked and removes it after so many days. This way
your blacklist does not get too long.
I'll have to try sshblacklist one of these days. Sounds like a great
design.
Mike
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