alert tcp [37.228.129.128,37.228.129.162,37.228.129.168,37.228.129.189,37.228.129.241,37.228.129.63,37.77.56.238,38.134.41.34,38.135.24.120,38.135.24.122] any -> $HOME_NET any (msg:"ET TOR Known Tor Exit Node Traffic group 99"; reference:url,check.torproject.org/torbulkexitlist; threshold:type limit, track by_src, seconds 60, count 1; classtype:misc-attack; flowbits:set,ET.TorIP; sid:2520098; 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;)