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  • blocking and ip with iptables
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In the event you need to block an IP from connection in any fashion using iptables, here's the steps

  1. user@host: iptables -A INPUT -s offendinghost -j DROP
  2. user@host: iptables-save > /etc/iptables.save

The second step if enabled on the system will allow they system to automatically reload the iptables rules after a reboot

If the automatic rule reloading isnt enabled already, here's how to do that
in /etc/network/interfaces

under either the last interface to be brought up, or the last interface mentioned in your iptables rules place the following:
-- snip --
pre-up iptables-restore < /etc/iptables.save
-- snip --

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