alert tcp [203.159.90.15,203.202.232.160,203.55.81.1,203.55.81.2,204.137.14.104,204.137.14.105,204.137.14.106,204.137.14.53,204.137.14.92,204.194.29.4] any -> $HOME_NET any (msg:"ET TOR Known Tor Exit Node Traffic group 68"; reference:url,check.torproject.org/torbulkexitlist; threshold:type limit, track by_src, seconds 60, count 1; classtype:misc-attack; flowbits:set,ET.TorIP; sid:2520067; 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;)