alert tcp [23.129.64.146,23.129.64.147,23.129.64.148,23.129.64.149,23.129.64.150,23.129.64.151,23.129.64.152,23.129.64.153,23.129.64.154,23.129.64.155] any -> $HOME_NET any (msg:"ET TOR Known Tor Exit Node Traffic group 88"; reference:url,check.torproject.org/torbulkexitlist; threshold:type limit, track by_src, seconds 60, count 1; classtype:misc-attack; flowbits:set,ET.TorIP; sid:2520087; 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;)