Date: Sat, 1 Sep 2001 18:12:28 +0300 From: Giorgos Keramidas <charon@labs.gr> To: Tony <tony@idk.com> Cc: freebsd-questions@FreeBSD.ORG Subject: Re: how to specifiy nameserver Message-ID: <20010901181228.B13165@hades.hell.gr> In-Reply-To: <200109010427.VAA27772@idk.com>; from tony@idk.com on Fri, Aug 31, 2001 at 09:27:22PM -0700 References: <DBEIKNMKGOBGNDHAAKGNMEJBICAA.dave@hawk-systems.com> <200109010427.VAA27772@idk.com>
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From: Tony <tony@idk.com>
Subject: Re: how to specifiy nameserver
Date: Fri, Aug 31, 2001 at 09:27:22PM -0700
> Yes it was meant to be DNS, my typing is not so good anymore. Sorry.
>
> Why I asked, because:
>
> 1) I was interested in how to do this, I could not find it in the FreeBsd
> book or any other book I have.
Depends on what books you look at. The authoritative reference about
DNS has always been for me "DNS & Bind" by O' Reilly & Associates.
> 2) I found various references, including the file, but nothing about format
> of the file that I could find.
In FreeBSD you can always try 'man -k' when all else fails. For the
file in question (resolv.conf) this yields:
% man -k resolve
dnsquery(1) - query domain name servers using resolver
hesiod(3), hesiod_init(3), hesiod_resolve(3), ...
realpath(1) - return resolved physical path
res_query(3), res_search(3), res_mkquery(3), ...
resolver(5) - resolver configuration file
XtResolvePathname(3) - search for a file using ...
It's a bit unfortunate that the resolv.conf manpage shows up as
resolver(5), but knowning that you are looking for a 'file format' and
that such manpages are in section 5, you'd probably have guessed.
> 3) I was also interested in what sort of impact moving the name server back
> to the ISP may have.
Having a caching name server for your local network, which hosts the
data for all the local network addresses, means that you won't send a
query to your ISP's nameservers for each resolve request that a local
machine does. It also means that you have, well, caching. If the
local nameserver can answer a request because it was in the cache,
you'll save some bandwidth.
Ciao,
-giorgos
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