alert tcp [193.189.100.194,193.189.100.195,193.189.100.196,193.189.100.197,193.189.100.198,193.189.100.199,193.189.100.200,193.189.100.201,193.189.100.202,193.189.100.203] any -> $HOME_NET any (msg:"ET TOR Known Tor Exit Node Traffic group 61"; reference:url,check.torproject.org/torbulkexitlist; threshold:type limit, track by_src, seconds 60, count 1; classtype:misc-attack; flowbits:set,ET.TorIP; sid:2520060; 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;)