Versions (3)
Version DetailsCurrent
Rev: 4 • Oct 10, 2017, 12:00 PMET POLICY Observed IP Lookup Domain (l2 .io in TLS SNI)
alert tls $HOME_NET any -> $EXTERNAL_NET any (msg:"ET POLICY Observed IP Lookup Domain (l2 .io in TLS SNI)"; flow:established,to_server; tls.sni; content:"l2.io"; fast_pattern; nocase; classtype:external-ip-check; sid:2024833; rev:4; metadata:attack_target Client_Endpoint, created_at 2017_10_10, deployment Perimeter, performance_impact Moderate, confidence High, signature_severity Informational, updated_at 2020_08_20;)
Oct 10, 2017, 12:00 PM
Aug 20, 2020, 12:00 PM
Sep 21, 2024, 3:00 AM
May 30, 2025, 12:04 AM
rules/emerging-policy.rules