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singpolyma
Asked: 2011-12-21 07:25:57 +0800 CST

Slow down potential attackers

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My server occasionally get massively hit by (probably bots) on a small group of IPs. Is there a good way (probably in iptables) to slow down or temporarily block/tarpit connections coming from an IP that has connected many times recently?

iptables

2 Answers

  1. Best Answer

    Yes, iptables supports this kind of dynamic rate limiting.

    See here for details: http://codingfreak.blogspot.com/2010/01/iptables-rate-limit-incoming.html

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  2. Maybe denyhosts would be a useful tool for you.

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