alert tcp [23.129.64.132,23.129.64.133,23.129.64.134,23.129.64.135,23.129.64.136,23.129.64.137,23.129.64.138,23.129.64.139,23.129.64.140,23.129.64.141] any -> $HOME_NET any (msg:"ET TOR Known Tor Exit Node Traffic group 74"; reference:url,check.torproject.org/torbulkexitlist; threshold:type limit, track by_src, seconds 60, count 1; classtype:misc-attack; flowbits:set,ET.TorIP; sid:2520073; 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;)