Signature Detail
This site is deprecated. Please CLICK HERE for latest updates
Short Name |
DNS:TUNNEL:NULL-RECORD |
|---|---|
Severity |
Minor |
Recommended |
No |
Category |
DNS |
Keywords |
NULL Record Type |
Release Date |
2013/12/04 |
Update Number |
2324 |
Supported Platforms |
idp-4.0+, isg-3.0+, j-series-9.5+, mx-11.4+, srx-12.1+, srx-branch-12.1+, vmx-17.4+, vsrx-12.1+, vsrx3bsd-18.2+ |
DNS: NULL Record Type
This signature detects DNS requests with a record type set to "Null". This is not common DNS traffic and is indicative of DNS tunneling. Blocking these packets will usually block the tunnel.