CentOS - May 2005 - bind and caching-nameserver

i was thinking if is it possible to cache some urls in bind? I just
want to do when you send the command "ping domain.com" even if you are
disconnected to the internet it will still resolve the ip of
domain.com


-- 
Regards,
Mark Quitoriano, CCNA
http://www.atamanetworks.com

El lun, 09-05-2005 a las 20:53 +0800, Mark Quitoriano
escribi?:
> i was thinking if is it possible to cache some urls in bind? 
AFAIK no way, Bind doesn't have nothing to do with URLS 
> I just
> want to do when you send the command "ping domain.com" even if
you are
> disconnected to the internet it will still resolve the ip of
> domain.com
> 
AFAIK this kind of behaviour is not possible with BIND, the way to
accomplish this is just use /etc/hosts. Of course is not a very elegant
solution if you have a lot of machines.

I'm wrong ?

TIA

-- 
Hardy Beltran Monasterios
hardy at acm dot org
Usuario Linux #50949 - http://counter.li.org
La Paz, Bolivia

> i was thinking if is it possible to cache some urls in bind?
As somebody else said, BIND doesn't cache URLs, but I suspect you are
asking if it will cache zones.  Yes, it will.
> I just
> want to do when you send the command "ping domain.com" even if
you are
> disconnected to the internet it will still resolve the ip of
> domain.com
Sure.  It will keep it as long as the SOA in the zone tells it to live.
For most zones, this is one day.

So, if you run a local caching nameserver and put 127.0.0.1 in
your /etc/resolv.conf file it should be cached even if you are off-line.

Regards,

Pat
-- 
                        "Let's Roll" - Todd Beamer

> -----Original Message-----
> From: centos-bounces at centos.org [mailto:centos-bounces at centos.org] On
> Behalf Of Mark Quitoriano
> Sent: Tuesday, May 10, 2005 2:02 AM
> To: CentOS mailing list
> Subject: Re: [CentOS] bind and caching-nameserver
> 
> well that's my problem with bind. once i cut myself to the internet i
> can't resolve all domain. i did this as a test i ping google.com first
> while i am connected to the net and then i disconnect my cable and try
> to ping it again but it can't resolve google.com anymore, my
> resolve.conf is "nameserver 127.0.0.1", and i don't know how
to
> configure bind to cache domain's ip addressess at least 1 day or so.
There are a number of programs designed for this type of situation.
pdnsd (http://www.phys.uu.nl/~rombouts/pdnsd.html) looks like it's just
what you're looking for. If not, try searching for 'dns proxy',
'dns
cache' or 'dns proxy cache' on freshmeat or google.

--
Marc