Archive for January, 2011
block ssh brute via iptables
hello there, i have received some ssh brute force attacks on my servers.
so i have found very simple solution 
1 2 3 4 | iptables -A INPUT -p tcp --dport 22 --syn -m limit --limit 1/m --limit-burst 3 -j ACCEPT iptables -A INPUT -p tcp --dport 22 --syn -j DROP service iptables save service iptables restart |
