Rule History

SID: 2030153 • Source: et/open

Versions (4)

Version DetailsCurrent

Rev: 1 • May 11, 2020, 12:00 PM

Message:

ET POLICY Observed IP Check Domain Domain (address .works in TLS SNI)

Rule:

alert tls $HOME_NET any -> $EXTERNAL_NET any (msg:"ET POLICY Observed IP Check Domain Domain (address .works in TLS SNI)"; flow:established,to_server; tls.sni; content:"address.works"; bsize:13; classtype:policy-violation; sid:2030153; rev:1; metadata:attack_target Client_Endpoint, created_at 2020_05_11, deployment Perimeter, performance_impact Low, confidence High, signature_severity Informational, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_05_11;)

Created:

May 11, 2020, 12:00 PM

Updated:

May 11, 2020, 12:00 PM

DB Created:

Sep 21, 2024, 3:00 AM

DB Updated:

Sep 18, 2025, 8:36 PM

Filename:

rules/emerging-policy.rules