Rule History

alert udp $EXTERNAL_NET 3478 -> $HOME_NET any (msg:"ET INFO Session Traversal Utilities for NAT (STUN Binding Response)"; content:"|01 01|"; depth:2; content:"|21 12 a4 42|"; distance:2; within:4; reference:url,tools.ietf.org/html/rfc5389; classtype:misc-activity; sid:2016150; rev:3; metadata:created_at 2013_01_04, deployment Perimeter, deployment alert_only, confidence High, signature_severity Informational, updated_at 2023_04_24;)