[Dnsmasq-discuss] server config options not working

[Ian Rose]

Please excuse my lack of networking knowledge, it's not my day job and I'm
trying to pick it up as I go.

Other threads suggest this is what the server config option is for, I was
surprised it didn't work straight away. Is this not right?

I know ip tables can be very complex to set up but know nothing about them.
Can someone quickly just tell me how to get twitter.com and other named
domains to be resolved 'properly' via eth0 no matter which interface the
request is made on, while still resolving all other addresses to localhost
on wlan0 as they do now?

Thanks in advance

On Thu, Mar 22, 2012 at 4:09 PM, richardvoigt at gmail.com <
richardvoigt at gmail.com> wrote:

> DNS is the wrong place to implement this behavior.
>
> Interception of TCP connections is done with packet rewriting rules in
> iptables, and you'll need to set up your exceptions there also.
>
> On Thu, Mar 22, 2012 at 6:01 AM, Ian Rose <irose123 at gmail.com> wrote:
>
>> I have set up a Ubuntu 10.04 LTS desktop machine with 2 interfaces (eth0
>> and wlan0). wlan0 acts as a wifi access point using hostapd.
>>
>> dnsmasq is installed OK, and everything works so that locally on that
>> machine DNS works fine as normal, but connections over wlan0 get everything
>> routed to localhost. This means for example that you can view a website
>> using firefox on the local machine, but connect via wlan from a phone, for
>> example, and you get routed to an internally hosted website. All well and
>> good so far.
>>
>> I want to add domains that will be excepted from this default behavior,
>> for example to allow someone connected via wlan to be able to tweet from
>> the internal website. I have tried using both the server and address
>> options in the dnsmasq.conf file, but neither work.
>>
>> *#This has no effect at all:
>> server=/twitter.com/#
>>
>> #Neither does this:
>> server=/twitter.com/192.168.1.254 at eth0*
>>
>> Where 192.168.1.254 is the IP address of the router it's attached to via
>> eth0 and the gateway to the internet. Nor does replacing this IP address
>> with the DNS lookup addresses specified in the router config. IP address
>> for twitter.com is gives 10.0.0.2 as before, the address of this machine
>> via wlan0.
>>
>> Alternatively trying something like the following seems to resolve
>> addresses OK, but makes a browser on the wireless connected device (eg
>> phone) hang:
>> *
>> address=/twitter.com/199.59.150.7
>> address=/twimg.com/184.169.81.33
>> address=/ssl.google-analytics.com/173.194.41.94
>> address=/www.google-analytics.com/173.194.41.137*
>>
>> Any ideas what is going on? Why doesn't the server option have any effect
>> at all?
>>
>> Thanks.
>> _______________________________________________
>> Dnsmasq-discuss mailing list
>> Dnsmasq-discuss at lists.thekelleys.org.uk
>> http://lists.thekelleys.org.uk/mailman/listinfo/dnsmasq-discuss
>>
>>
>
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