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For Linux, what is the best program/daemon out there that would detect, block, and report computers scanning the server's ports, sequentially or randomly, for SSH, MySQL, popular web-based administering systems, and other security-sensible services that were moved from their default ports?

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  • Product recommendations are explicitly off-topic for SF (and, I'm told, other SE sites); sorry.
    – MadHatter
    Nov 14, 2012 at 15:26
  • yeah this is true. But to answer the question in a general way, there are many programs out there that are run onto of iptables and will add blocked ip into ip iptables. smoothwall or csf are many out there. I personally use CSF.
    – Sc0rian
    Nov 14, 2012 at 15:44

1 Answer 1

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ConfigServer Services is a set perl modules/Scripts/daemons, which effectively provide you with port scanning ability, detect it, report and and block it with number of ways to tweak its options.

http://configserver.com/cp/csf.html

I personally recommend it for small scale servers.

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