DNS without internet

I have a standalone linux box without internet connection.
It should redirect all http requests to a single information page.
The problem is with dns.
Is it possible to configure some dns server which will return always the
same addr?
www.cnn.com -> 192.168.1.1
www.yahoo.com -> 192.168.1.1

Or maybe some other solution?

thanks

pantomas <(E-Mail Removed)> writes:

> I have a standalone linux box without internet connection.
> It should redirect all http requests to a single information page.
> The problem is with dns.
> Is it possible to configure some dns server which will return always the
> same addr?
> www.cnn.com -> 192.168.1.1
> www.yahoo.com -> 192.168.1.1

You could do this with a wildcard A record. Did you miss the uproar
about VeriSign's recent stunt? :-)

--
Michael Fuhr
http://www.fuhr.org/~mfuhr/

pantomas <(E-Mail Removed)> wrote:
> I have a standalone linux box without internet connection.
> It should redirect all http requests to a single information page.
> The problem is with dns.
> Is it possible to configure some dns server which will return always the
> same addr?
> www.cnn.com -> 192.168.1.1
> www.yahoo.com -> 192.168.1.1
>
> Or maybe some other solution?

Well, you can do anything locally. Just edit /etc/named.conf and create
zone files for <cnn.com> and <yahoo.com>. Then, all your machine will
think that you're authoritative nameserver for those domains.

--
William Park, Open Geometry Consulting, <(E-Mail Removed)>
Linux solution for data management and processing.

William Park <(E-Mail Removed)> writes:

> pantomas <(E-Mail Removed)> wrote:
> > I have a standalone linux box without internet connection.
> > It should redirect all http requests to a single information page.
> > The problem is with dns.
> > Is it possible to configure some dns server which will return always the
> > same addr?
> > www.cnn.com -> 192.168.1.1
> > www.yahoo.com -> 192.168.1.1
> >
> > Or maybe some other solution?
>
> Well, you can do anything locally. Just edit /etc/named.conf and create
> zone files for <cnn.com> and <yahoo.com>. Then, all your machine will
> think that you're authoritative nameserver for those domains.

This will work only if you create zones for all expected domains;
it won't work if the requirement means that requests to sites not
known in advance should also be redirected. Some possible ways to
redirect *all* requests are:

1. Use wildcard records in DNS. See the debate over VeriSign's
recent use of wildcards for some of the problems they can cause.

2. Require all HTTP requests to go through a proxy that's configured
to respond identically to every request.

3. Redirect HTTP requests at the network layer using a firewall or
other packet filtering/forwarding mechanism.

All of these possibilities have potential problems and limitations;
you'll have to evaluate which, if any, best fits your requirements.

--
Michael Fuhr
http://www.fuhr.org/~mfuhr/

pantomas wrote:
> I have a standalone linux box without internet connection.
> It should redirect all http requests to a single information page.
> The problem is with dns.
> Is it possible to configure some dns server which will return always the
> same addr?
> www.cnn.com -> 192.168.1.1
> www.yahoo.com -> 192.168.1.1
>
> Or maybe some other solution?

Add them to your /etc/hosts file, as in

127.0.0.1 localhost
192.168.1.1 www.cnn.com www.yahoo.com



--
Lew Pitcher

Master Codewright and JOAT-in-training
Registered Linux User #112576 (http://counter.li.org/)
Slackware - Because I know what I'm doing.

*snip*

Take a look at dnsmasq. The nice thing about it is that
it is intended for small operations so config is simple.
Unlike BIND the full-up which is intended for the very
large so it is a beast to set up. The dnsmasq process can
just pick up host entries from /etc/host for example.

http://thekelleys.org.uk/dnsmasq/doc.html


--
Vincent Fox
Georgia Institute of Technology, Atlanta Georgia, 30332
uucp: ...!{decvax,hplabs,ncar,purdue,rutgers}!gatech!pri sm!vf5
Internet: (E-Mail Removed)