ET INFO Session Traversal Utilities for NAT (STUN Binding Request On Non-Standard Low Port)

7.0.35.0SID: 2033077Rev: 3Enabled8 views
Sourceet/open
Fileemerging-info.rules
CreatedJune 3, 2021
UpdatedJune 1, 2026
Classificationmisc-activity
alert udp $HOME_NET any -> $EXTERNAL_NET :1024 (msg:"ET INFO Session Traversal Utilities for NAT (STUN Binding Request On Non-Standard Low Port)"; xbits:set,ET.STUN,track ip_src,expire 60; content:"|00 01|"; depth:2; content:"|21 12 a4 42|"; fast_pattern; distance:2; within:4; reference:url,tools.ietf.org/html/rfc5389; classtype:misc-activity; sid:2033077; rev:3; metadata:created_at 2021_06_03, deployment Perimeter, deployment alert_only, confidence High, signature_severity Informational, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2026_06_01;)

References

urltools.ietf.org/html/rfc5389

Metadata

created at2021_06_03
deploymentalert_only
confidenceHigh
signature severityInformational
tagDescription_Generated_By_Proofpoint_Nexus
updated at2026_06_01

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