Signature Detail
Short Name |
DNS:AUDIT:QCLASS-UNEXP |
|---|---|
Severity |
Info |
Recommended |
No |
Category |
DNS |
Release Date |
2003/04/22 |
Update Number |
1213 |
Supported Platforms |
idp-4.0+, isg-3.0+, j-series-9.5+, mx-9.4+, srx-9.2+, srx-branch-9.4+, vsrx-12.1+ |
DNS: QCLASS in Reply
This protocol anomaly triggers when it detects a DNS reply with a resource specifying a CLASS ID reserved for queries only (QCLASS). This can indicate an exploit attempt.
Extended Description
None
References