Re: DNS forwarding

[trall () almaden ibm com]

> >
For example if internal host foo.local.net asks for www.external.com,
should the firewall forward the query directly to a root server or should
it forward the query to, for example, the ISP's cacheing server?
<<

Forwarding consists of sending a recursive query to the forwarder targets.
The root servers, in general, do not allow recursive queries (they return a
referral instead).  Use  your ISP's servers (or some other non-root server
that supports recursive queries).

Tony Rall



My thought has always been to forward to the local cacheing server to take
load off the root servers (in the example above, surely the info for an
appropriate .com server is cached in the ISP's server).  I have also heard
that all firewalls should forward to the root server.