Securing Your Linux Server With Iptables

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Securing Your Linux Server With Iptables

'Spamming', when used in a different context, does not necessarily have to be email specific. If you ever had a chance to play arcade fighter's such as Street Fighter 2, you'll notice that certain fighters have "cheap" moves that can be "used over and over", such as M. Bison's scissor kick corner trap (ah the old days). A player could pretty much "spam" this combo over and over. The interesting part about this cheap combo is that it could be countered just as easily with some skill. A basic set of good iptables rules is the perfect counter punch to a slew of common spamming attacks - no need to have SpamAssassin or procmail process the email when it doesn't even get through the front lines! Read on to gain a good base understanding of iptables and its rules. Ha-dou-ken!

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