DNS and NAT

[primero]

Suzana Lojic-Skoric wrote:

>> iptables -t nat -A POSTROUTING -o ppp0 -j MASQUERADE
>>
>> and everything is as described.
>>
> Yes, you are right, but the problem is between my inside client and 
> the NAT gateway I have a machine that drops everything that is not 
> 10.x.x.x. I know, I know, it is insane... but my job is to find a 
> solution for DNS in such network.
>
> So basically, my inside network can only route 10.x.x.x and everything 
> else is dropped.
>
>> As /dev/rob0 pointed out, if you don't want your clients to talk with
>> google directly use proxies.
>>
>
> I'll check out the proxy idea. Thanks for your input.
>
> Suzana
>
You could use a Proxy but this would not solve your problem of 'have a 
machine that drops everything that is not 10.x.x.x' ... even with a 
proxy you would need that at least that machine would be able to access 
Public Big Internet.

Maybe i missed the point ... but if you can not access anything else 
then 10.x.x.x because something beetween clients and DefaultGW would 
drop it i don't see any escape other then configuring the proxy on your 
NAT Device because it should have not problem accessing the Public Internet.

Bye
Francesco