Signature Detail
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Short Name |
DNS:REQUEST-RRTYPE-ANY |
|---|---|
Severity |
Info |
Recommended |
No |
Category |
DNS |
Keywords |
Request With DNS Resource Record Type 'ANY' |
Release Date |
2013/06/12 |
Update Number |
2272 |
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: Request With DNS Resource Record Type 'ANY'
This signature detects DNS requests with a resource record type of 'ANY'. This special DNS request type asks the server for any cached records relating to the domain requested. While this can be a legitimate request, the most common use is to perform spoofed requests for ANY records to a recursive DNS server that flood a victim with un-requested information. This is known as a "DNS Amplification" or sometimes a "DNS Reflection" attack.
References