alert tcp [171.25.193.82,172.104.182.84,172.104.186.73,172.105.20.12,172.232.209.254,172.234.228.174,172.234.92.148,172.81.131.139,172.81.132.35,172.81.132.94] any -> $HOME_NET any (msg:"ET TOR Known Tor Exit Node Traffic group 18"; reference:url,check.torproject.org/torbulkexitlist; classtype:misc-attack; sid:2520017; rev:6407; metadata:affected_product Any, attack_target Any, deployment Perimeter, tag TOR, signature_severity Informational, created_at 2008_12_01, updated_at 2026_10_14;)