Iptables

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Installing iptables

iptables is a secure, robust open-source firewall solution for linux.

$ sudo emerge -av iptables

To ban the IP x.x.x.x,

$ sudo iptables -I INPUT -s x.x.x.x -j DROP

To ban a range of IPs starting with x.x.x,

$ sudo iptables -A INPUT -s x.x.x.0/24 -j DROP

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