f5-big-ip.rules

# Sagan f5-big-ip.rules
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alert any $EXTERNAL_NET any -> $HOME_NET any (msg: "[F5-BIG-IP] Brute force Attempt [5/1]"; content: "failed to login after"; content: "sshd"; xbits: set,brute_force,track ip_src,expire 21600; default_proto: tcp; default_dst_port: $SSH_PORT; classtype: unsuccessful-user; parse_src_ip: 1; after: track by_src, count 5, seconds 300; threshold: type suppress, track by_src, count 1, seconds 300; reference: url,support.f5.com/kb/en-us/solutions/public/13000/400/sol13426.html; reference: url,wiki.quadrantsec.com/bin/view/Main/5002946; sid:5002946; rev:3;)