Re: Can I define a DNS server to listen on an alternate port?

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From: Andrew Hodgson (me3_at_privacy.net)
Date: 09/04/04 

Date: Sat, 04 Sep 2004 19:21:34 +0100

On Fri, 3 Sep 2004 20:30:30 -0700, "Peter Steele"
<psteele@z-force.com> wrote:

>I need to define a DNS delegate for our name server that handles a certain
>class of addresses. For example, say I define a delegate that will handle
>all references to fred.mydomain.com. In other words, if the user enters
>something like
>
> fred.mydomain.com
>
>instead of the normal DNS being used to resolve this name it will instead be
>delegated to another DNS server, specifically a special DNS server that I've
>written. What I'd like to do is have my DNS server bind to a different port
>than the normal DNS port, and tha tin itself is easy enough since I wrote
>the code. What I can't do is tell the main DNS server that the delegate I've
>set up listens on a different port. Is there a way to configure this?

Don't do that, as DNS requests take place on TCP/UDP port 53, how will
other DNS servers know that requests need to go to a different port?
There is no way to specify this information in the DNS.

Why can't you place records for fred.yourdomain.com in your main
server, are you planning to put a lot of records there and have them
dynamically controled or something? Why not just put the nameserver
for fred.yourdomain.com onto a different NIC or machine? If this is a
public nameserver, have you thought about how you will handle
secondaries?

Andrew. 

-- 
 Andrew Hodgson in Bromyard, Herefordshire, UK.
My Email: use <andrew at hodgsonfamily dot org>.

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