Re: [squid-users] DNS Problem

if your dns_timout option is set too low.

Dave.
OpteqSec.

----- Original Message -----
From: "William Carty" <admin@thinktankdecoy.com>
To: <squid-users@squid-cache.org>
Sent: Sunday, February 10, 2002 8:57 PM
Subject: [squid-users] DNS Problem

> I set up a Squid box the other day to use for testing purposes. I've
> taken it down to my ISP's server room & am running it from there. When
> I set up my laptop at the ISP office & try to access sites via the
> proxy, everything works fine. When I come home & try the same thing, I
> end up getting this message:
>
> -------------------------------------------------------------------
> While trying to retrieve the URL: http://www.cnn.com/
>
> The following error was encountered:
>
> Unable to determine IP address from host name for www.cnn.com
> The dnsserver returned:
>
> Refused: The name server refuses to perform the specified operation.
> This means that:
>
> The cache was not able to resolve the hostname presented in the URL.
> Check if the address is correct.
> --------------------------------------------------------------------
>
> Now, I know what that means - I'm just trying to figure out why I'm
> getting it. The only difference between when it works & when it doesn't
> work is that I'm on two different subnets. I have an ACL set up
> allowing access from home. If I try to access a site via the IP address
> from home, it works fine - so I'm fairly sure the Squid config is okay.
>
> For the sake of discussing this problem, let's say that the Squid box
> uses the following DNS servers: 192.168.0.10 & 192.168.0.11.
>
> >From the Squid box:
>
> [will@filter /home]# ping www.cnn.com
> PING cnn.com (207.25.71.20) from 123.456.79.99: 56(84) bytes of data.
>
> So the Squid box resolves the name using either of the DNS servers
> listed...
>
> >From my home machine - set up using the same DNS servers as the Squid
> box:
>
> C:\>ping www.cnn.com
>
> Pinging cnn.com [207.25.71.20] with 32 bytes of data:
>
> So, they both resolve the address... what would cause Squid to return
> the error I'm getting. It really doesn't appear to be a valid DNS
> problem.
>
> Thanks.
>
>
Received on Sun Feb 10 2002 - 12:09:21 MST