Versions (5)
Version DetailsCurrent
Rev: 1 • Oct 19, 2022, 12:00 PMET INFO LibreDNS DNS Over HTTPS Certificate Inbound
alert tls $EXTERNAL_NET any -> $HOME_NET any (msg:"ET INFO LibreDNS DNS Over HTTPS Certificate Inbound"; flow:established,to_client; tls.cert_subject; content:"CN=doh.libredns.gr"; bsize:18; fast_pattern; threshold:type both, count 1, seconds 600, track by_src; classtype:misc-activity; sid:2039501; rev:1; metadata:attack_target Client_Endpoint, created_at 2022_10_19, deployment Perimeter, confidence High, signature_severity Informational, tag DoH, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2022_10_20, reviewed_at 2024_10_08;)
Oct 19, 2022, 12:00 PM
Oct 20, 2022, 12:00 PM
Sep 21, 2024, 3:00 AM
Aug 28, 2025, 9:34 PM
rules/emerging-info.rules