I think the best way to prevent brute force attack's to your logins on any service is not in the firewall, try using pam modules, for ssh try pam-abl (http://tech.tolero.org/blog/en/linux/ssh-password-brute-force-protection).
I think the best way to prevent brute force attack's to your logins on any service is not in the firewall, try using pam modules, for ssh try pam-abl (http://tech.tolero.org/blog/en/linux/ssh-password-brute-force-protection).
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