alert tcp [23.128.248.171,23.128.248.172,23.128.248.173,23.128.248.174,23.129.64.130,23.129.64.131,23.129.64.132,23.129.64.133,23.129.64.134,23.129.64.135] any -> $HOME_NET any (msg:"ET TOR Known Tor Exit Node Traffic group 86"; reference:url,check.torproject.org/torbulkexitlist; threshold:type limit, track by_src, seconds 60, count 1; classtype:misc-attack; flowbits:set,ET.TorIP; sid:2520085; 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;)