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[ale] cacheing DNS?
- Subject: [ale] cacheing DNS?
- From: leamhall at gmail.com (Leam Hall)
- Date: Tue, 08 May 2012 18:00:06 -0400
- In-reply-to: <[email protected]>
- References: <[email protected]>
On 05/08/2012 05:46 PM, John Heim wrote:
> I'm confused about caching DNS and recursion. I keep reading that best
> practice is to not use the same dns servers for the machines on your LAN as
> you do for those outside your LAN. So if I'm the admin of example.org and if
> I want redundant DNS servers for both internal and external queries, do I
> have to run four DNS servers? Do people really do that?
I think the normal process is to have your DNS servers also cache
external info. Of course, you can set up a caching name server on each
host. It's not that difficult and might help if your doing a lot of
activity with the same sites.
Keep in mind that the nameserver directive in /etc/resolv.conf can only
have 3 entries, IIRC.