[OPENSSH] PAM Authentication failure - Brute force [10/1]

drop any $EXTERNAL_NET any -> $HOME_NET any (msg:"[OPENSSH] PAM Authentication failure - Brute force [10/1]"; content: "Authentication failure"; xbits: set,brute_force,track ip_src, expire 21600; default_proto: tcp; default_dst_port: $SSH_PORT; classtype: brute-force; normalize; parse_src_ip: 1; program: sshd; after: track by_src, count 10, seconds 300; threshold: type suppress, track by_src, count 1, seconds 300; sid: 5000015; rev:19;)