Forwarding under which conditions?
Arik Raffael Funke
arik.funke at gmx.de
Tue Jun 13 08:38:57 UTC 2006
Barry Margolin wrote:
> Arik Raffael Funke <arik.funke at gmx.de> wrote:
>> Can anybody summarise briefly when to and when not to use forwarding? I
>> thought I use local caching such as to speed up queries.
>
> Use forwarding when there's something preventing you from contacting
> other servers on the Internet, like a firewall.
>
> Whether you use forwarding or not, your server will still cache the
> results.
My internal clients cannot reach the public dns servers directly due to
non-public ips. If I simply forward dns queries with iptables to an
external dns, the external dns caches the info, but I still have to get
it to my local network every time a query is run. I thus have a delay -
especially if the remote machine is slow. I was looking to eliminate
this delay.
Are there any reasons why I should not use the forwarders option with my
configuration?
Cheers,
Arik
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