alert tcp [178.17.171.102,178.17.174.164,178.175.148.155,178.20.55.16,178.20.55.182,178.218.144.18,178.218.144.96,178.79.154.219,178.83.122.52,179.43.128.16] any -> $HOME_NET any (msg:"ET TOR Known Tor Exit Node Traffic group 20"; reference:url,check.torproject.org/torbulkexitlist; classtype:misc-attack; sid:2520019; rev:6407; metadata:affected_product Any, attack_target Any, deployment Perimeter, tag TOR, signature_severity Informational, created_at 2008_12_01, updated_at 2026_10_14;)