Re: using linux with windows internet connection sharing

From: Andy Baxter (news4_at_earthsong.null.free-online.co.uk)
Date: 09/16/04 

Date: Thu, 16 Sep 2004 20:41:16 +0100

Dances With Crows said:

> ["Followup-To:" header set to comp.os.linux.misc.]
> On Thu, 16 Sep 2004 19:29:40 +0100, Andy Baxter staggered into the Black
> Sun and said:
>> I'm setting up a linux machine on a small network that is using a
>> windows machine to connect the network to the internet via a usb DSL
>> modem.
>>
>> The linux machine is getting its IP address and gateway OK using DHCP,
>> and the windows machine seems to be working right as a DNS relay (it
>> returned an address for google)
>
> So you're saying that you can do "PING google.com" from a CMD window on
> the 'Doze machine and everything works OK. That's good.

The 'doze machine can browse web sites, so I assume all that's OK.

>> But when I ping google [from the Linux machine], nothing comes
>> back. Pinging the gateway machine (192.168.0.1) does work.
>
> So, what's in the Linux box's /etc/resolv.conf ?

nameserver 192.168.0.1

i.e. dhcp has set up the windows machine as a DNS relay. This does seem to
be working - it returned an address for www.google.com which included the
usual www.google.akadns.net alias, so it must have looked something up.
The problem is that pinging that address doesn't return anything.

> 'Doze ICS is supposed
> to set up a DHCP server on the 'Doze machine, and that DHCP server is
> supposed to provide information to its clients like "this is your IP,
> this is your netmask, these are your DNS servers". If there's nothing
> (or incorrect information) in your Linux machine's resolv.conf , then
> DNS won't work on the Linux box.

That bit is working afaik - the linux box was being given an IP address
and default route, and pinging the windows machine works OK. 

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