Hi to everyone! this is vinodh here!i'm a system admin, my servers are under ssh brute force attack, although i use plesk firewall they attack using script,they exploit all ports with diff user names, i could stop it using iptables,but at present i'm not authorised to use! i tried to use denyhosts,but its no use,since our mgmt may login(from Us) through ssh from diff gateway i cannot whitelist particular ip!
ANY IDEAS TO STOP THIS BRUTE FORCE ATTACKS! plzzzzz reply me Thanks