Signature Detail
Short Name |
DNS:REQUEST-RRTYPE-ANY |
|---|---|
Severity |
Info |
Recommended |
No |
Category |
DNS |
Keywords |
DNS ANY Amplification Reflection Attack |
Release Date |
2013/06/12 |
Update Number |
2272 |
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: 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