alert tcp [31.40.204.151,31.44.238.25,35.0.127.52,37.114.50.124,37.114.50.142,37.114.50.18,37.114.50.27,37.114.63.5,37.187.5.192,37.221.208.71] any -> $HOME_NET any (msg:"ET TOR Known Tor Exit Node Traffic group 98"; reference:url,check.torproject.org/torbulkexitlist; threshold:type limit, track by_src, seconds 60, count 1; classtype:misc-attack; flowbits:set,ET.TorIP; sid:2520097; 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;)