Recursive and authoritative servers working together DNS is a “two-phase” transaction. First, the client asks the recursive server for the answer to a DNS query.

I was working on a clients Server 2008 DNS today and removed the dns forwarders so dns would use the root hints instead, and recursion (to external, web dns queries) stopped working until I added ...

If the server were not recursive, the user's machine would have to query the DNS server, the .com server and the authoritative server to obtain the IP address of ABC.COM.

Looking forward, Liu said that only organizations with a specific need for open recursive DNS servers — and the technical ability to keep them from being flooded — should run them.

How does a DNS server work? When you enter a URL, what you're really doing is asking your computer to find and connect to another IP address. To do this, it uses a set of related servers, all of ...

The Measurement Factory surveyed 1.3 million DNS servers, and found that more than three quarters of them allow recursive name service to "arbitrary queriers", rather than from trusted users.

In an effort to properly prepare our DMZ for future ecommerce transactions i've been reading some of Microsoft's documents on securing DNS. My particular question is how to handle DNS recursion in ...

Looking forward, Liu said that only organizations with a specific need for open recursive DNS servers — and the technical ability to keep them from being flooded — should run them.