alert tcp [91.208.75.239,91.208.75.3,91.208.75.4,91.219.236.101,91.219.237.39,91.92.109.126,91.92.109.43,92.119.164.208,92.119.165.108,92.119.165.34] any -> $HOME_NET any (msg:"ET TOR Known Tor Exit Node Traffic group 137"; reference:url,check.torproject.org/torbulkexitlist; threshold:type limit, track by_src, seconds 60, count 1; classtype:misc-attack; flowbits:set,ET.TorIP; sid:2520136; 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;)