alert tcp [209.141.51.180,209.141.51.30,209.141.55.26,209.141.58.254,209.141.61.225,212.21.66.6,212.38.189.186,212.69.167.80,212.73.134.204,212.86.125.110] any -> $HOME_NET any (msg:"ET TOR Known Tor Exit Node Traffic group 83"; reference:url,check.torproject.org/torbulkexitlist; threshold:type limit, track by_src, seconds 60, count 1; classtype:misc-attack; flowbits:set,ET.TorIP; sid:2520082; 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;)