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Re: [afnog] Red Hat 8.0 as a router
- To: Brian Candler <B.Candler at pobox.com>
- Subject: Re: [afnog] Red Hat 8.0 as a router
- From: Daniel Obuobi <dobuobi at yahoo.com>
- Date: Sat, 16 Aug 2003 01:30:18 -0700 (PDT)
- Cc: Stephane Bortzmeyer <bortzmeyer at nic.fr>
- Cc: afnog at afnog.org
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Thanks a lot for the explanation.
bye
daniel
--- Brian Candler <B.Candler at pobox.com> wrote:
> On Fri, Aug 15, 2003 at 12:16:28PM -0700, Daniel
> Obuobi wrote:
> > Please what is the main difference between the
> > installing dns to do resolving and one to be an
> > authoritative sever. Are they no installed the
> same
> > way?
>
> Kind of, but it is better to configure them
> differently:
>
> - an authoritative server should have recursion
> turned off. This prevents it
> being used as a cache, minimises CPU load, and
> ensures that its RAM usage
> is minimal.
>
> - a caching server should be configured with
> recursion on but only answering
> queries from your own IP ranges, to prevent it doing
> work for other people
> on the Internet. It needs to have lots of RAM.
>
> - keeping the boxes separate makes scaling *much*
> easier, and also prevents
> problems when domains are transferred (your cache
> won't be polluted with
> stale information)
>
> This is the advice for an ISP environment, and if
> you are authoritative for
> hundreds or thousands of domains it's really
> important.
>
> OTOH if this is just some little office system, then
> one box doing both jobs
> will be OK, and indeed if you don't have your own
> domain (or if your
> upstream ISP hosts it for you) then you don't need
> an authoritative
> nameserver at all, just a cache.
>
> Cheers,
>
> Brian.
=====
Daniel Obuobi
Co-ordinator, Computer Centre
Technical Co-ordinator, AVU Cape Coast
University of Cape Coast, Cape Coast, Ghana
Tel: 233-42-32440 / 233-42-30859 (Office); Fax: 233-42-34612
Co-ordinator, Global Teenager Project, Central Region, Ghana.
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