On Tue, 09 Aug 2005 Amitay Isaacs wrote :

On Tue, 2005-08-09 at 11:01 +0000, vaibhav samant wrote:

...

Hello,

I have setup a Linux proxy on FC2 with wvdial for internet connection over modem. I have about 5 differenet ISP dialup accounts & depending on connectivity, I keep juggling between the ISPs.

The problem is, whenever I swicth the ISP, I have to change the DSN IPs on the desktop too.

If I put my Proxy Server's IP address as the DNS on the desktop, then I will not have to keep changing the DNS values on the desktop.

Is there any simple way to forward DNS queries (recd from the desktops) to the ISP's DNS Server (allotted dynamically for every connection)?

Alternately is it not possible for server (i guess squid) to do all the resolving business and let the desktop live in peace....

Advice / suggestions / pointers are welcome.

Vai

Most ISPs configure to send the DNS server information when you dial-up. PPP supports dynamically updating /etc/resolv.conf with the information received from ISP. I think the option is called "Auto DNS" in wvdial. Make sure it is on.

------------- In my case the DNS entries are dynamically recd from the ISP and are available in /var/run/ppp/resolv.conf.

But how will the desktops get this entry. I have the problem on the desktop side....

I am sure of one thing, the DNS Server IP on the desktop has to be the one of my Proxy Server.

So the next question is, which / how to run a small DNS server / DNS proxy Server, which will fwd all DNS request recd from desktops to the ISP's DNS server, and feed the reply back to the desktops....

Thx. Vai