alert tcp [23.191.200.121,23.191.200.122,23.191.200.123,23.191.200.124,23.191.200.13,23.191.200.14,23.191.200.15,23.191.200.16,23.191.200.17,23.191.200.18] any -> $HOME_NET any (msg:"ET TOR Known Tor Exit Node Traffic group 101"; reference:url,check.torproject.org/torbulkexitlist; threshold:type limit, track by_src, seconds 60, count 1; classtype:misc-attack; flowbits:set,ET.TorIP; sid:2520100; rev:6364; metadata:affected_product Any, attack_target Any, deployment Perimeter, tag TOR, signature_severity Informational, created_at 2008_12_01, updated_at 2026_09_01;)