Rule History

alert tls $HOME_NET any -> $EXTERNAL_NET any (msg:"ET INFO Observed DNS over HTTPS Domain in TLS SNI (adguard .kss .ovh)"; flow:established,to_server; tls.sni; content:"adguard.kss.ovh"; bsize:15; fast_pattern; classtype:misc-activity; sid:2045599; rev:3; metadata:affected_product Any, created_at 2023_05_04, deployment Perimeter, performance_impact Low, confidence High, signature_severity Informational, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_12_01, reviewed_at 2024_10_01, mitre_tactic_id TA0011, mitre_tactic_name Command_And_Control, mitre_technique_id T1572, mitre_technique_name Protocol_Tunneling;)