File dns-recursion
Download: http://nmap.org/svn/scripts/dns-recursion.nse
User Summary
Checks if a DNS server allows queries for third-party names. It is expected that recursion will be enabled on your own internal nameservers.
Example Usage
nmap -sV -sC <target>
Script Output
PORT STATE SERVICE REASON 53/udp open domain udp-response |_dns-recursion: Recursion appears to be enabled
Requires
Author: Felix Groebert
License: Same as Nmap--See http://nmap.org/book/man-legal.html