alert tcp [192.3.140.104,192.3.146.243,192.34.80.176,192.42.116.100,192.42.116.101,192.42.116.102,192.42.116.103,192.42.116.104,192.42.116.105,192.42.116.106] any -> $HOME_NET any (msg:"ET TOR Known Tor Exit Node Traffic group 56"; reference:url,check.torproject.org/torbulkexitlist; threshold:type limit, track by_src, seconds 60, count 1; classtype:misc-attack; flowbits:set,ET.TorIP; sid:2520055; 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;)