alert tcp [185.42.170.203,185.56.171.94,185.67.82.114,185.82.219.109,185.93.89.106,185.93.89.96,188.239.191.25,188.68.36.28,188.68.41.191,188.68.49.235] any -> $HOME_NET any (msg:"ET TOR Known Tor Exit Node Traffic group 51"; reference:url,check.torproject.org/torbulkexitlist; threshold:type limit, track by_src, seconds 60, count 1; classtype:misc-attack; flowbits:set,ET.TorIP; sid:2520050; rev:6266; metadata:affected_product Any, attack_target Any, deployment Perimeter, tag TOR, signature_severity Informational, created_at 2008_12_01, updated_at 2026_05_26;)