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.
Short Name
DNS:REQUEST-RRTYPE-ANY
Severity
Info
Recommended
False
Recommended Action
None
Category
DNS
Keywords
'ANY' DNS Record Request Resource Type With
Release Date
06/13/2013
Supported Platforms
srx-branch-12.3
srx-19.3
srx-branch-19.3
vsrx3bsd-19.2
srx-branch-19.4
vsrx-19.4
mx-12.3
mx-19.4
vmx-19.4
mx-19.3
vsrx3bsd-19.4
srx-19.4
vsrx-12.3
vmx-19.3
vsrx-19.2
srx-12.3
Sigpack Version
3375
False Positive
Rarely