Forwarding.....

[Kevin Darcy]

erik c. pelletier wrote:

> I currently have setup a name server to respond to requests from
> internal users. The purpose of this name server is to return the
> internal, NAT'd addresses of available hosts. This name server contains
> a partial list of hosts for my domain. There's an external name server
> that has a complete list.
>
> What I would like to have happen (and I believe this to be theoretically
> possible) is the following:
>
>     If the internal name server doesn't have the records for the
> requested host in it's zone data or cache I would like it to forward the
> query to my external name server. For example, both the internal and
> external name servers are both authoritative for xxx.com. If someone
> looks up machine1.xxx.com and it's not in the db files of the internal
> name server I want it to forward it to the external server.
>
> I've used the forwarders directive and forward-only and neither seem to
> have an effect. It appears that since name i'm looking for is within the
> authoratative zone that it simply says it's not available.
>
> Thank you in advance. I hope my scenario makes sense. I welcome any
> input.

This functionality may be possible with the "views" that are being
implemented in BIND 9.

In the meantime, the usual methodology is for your internal DNS to include
both internal and external entries.


- Kevin