alert tcp [185.243.218.226,185.243.218.229,185.243.218.230,185.243.218.231,185.243.218.232,185.243.218.233,185.244.192.175,185.244.192.184,185.246.128.161,185.246.188.149] 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:6317; metadata:affected_product Any, attack_target Any, deployment Perimeter, tag TOR, signature_severity Informational, created_at 2008_12_01, updated_at 2026_07_16;)