[CentOS] Re: OT: anything in CentOS 5.2 that uses opendns.com when browsing web?

Lanny Marcus lmmailinglists at gmail.com
Fri Jul 11 00:31:21 UTC 2008

On 7/10/08, Scott Silva <ssilva at sgvwater.com> wrote:
> When you set up your connection to your provider, do you have a static
> address
> or dynamic?

We get a dynamic IP address when we connect to ADSL.

>If static, you had to set your next step resolver in the config.
> If you are dynamic, you get what your provider sends with the dhcp request.
> Since you said you have an ipcop box for your router you should be able to
> ssh
> into it and run setup and change your nameserver setting to and
> your
> ipcop should be a caching nameserver. If you have another address there it
> will query to that server.

I will try to SSH into the ipcop box. I've never tried to SSH into it.
I've always looked at it via the web interface.

> I just tried it from one of my ipcop boxes and got a query all the way to
> the
> root servers;
>   dig +trace gmail.com

I tried dig +trace from my Desktop and it didn't work.  Probably
because I'm behind the Firewall. If I can  SSH into the ipcop box I
will try dig +trace from there.

If I can get the above to work, I suspect I may also need to change
something in the configuration for the ADSL modem for DNS. Sounds like
a quick and easy way to do this!

I have my notes from when I installed IPCop on that box, last
September. The ADSL modem IP is and the Red NIC IP is and the Green NIC IP is    and in the DHCP
Server Configuration Menu the Primary DNS is

Thanks much!

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