Originally Posted by MiKANiSe
However, I fail to apply it:
when I type (testing the example):
iptables -I INPUT -p tcp --dport 22 -i eth0 -m state --state NEW -m recent \ --set
iptables: No chain/target/match by that name
I think this is due a module not loaded:
Look if you can find it in the output of lsmod after issueing the iptables command.
If not load it manually
Another one that could be necessary:
What distro are you using?
For me this worked instantaneously.