alert tcp [23.129.64.162,23.129.64.163,23.129.64.164,23.129.64.165,23.129.64.166,23.129.64.167,23.129.64.168,23.129.64.169,23.129.64.170,23.129.64.171] any -> $HOME_NET any (msg:"ET TOR Known Tor Exit Node Traffic group 77"; reference:url,check.torproject.org/torbulkexitlist; threshold:type limit, track by_src, seconds 60, count 1; classtype:misc-attack; flowbits:set,ET.TorIP; sid:2520076; 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;)