[Dnsmasq-discuss] dnsmasq / dns server / iptables config glitch?

Adam Hardy adam.ant at cyberspaceroad.com
Mon Nov 23 18:28:06 GMT 2009

Thought I had a simple problem but I don't really find anything relevant on the 
web and I'm not getting any responses to my questions here.

Just a pointer in the right direction would be helpful - something to put me 
back on the scent?


Adam Hardy on 20/11/09 20:38, wrote:
> I have a lan with a gateway machine running an ADSL modem and two NICs with 
> iptables and dnsmasq.
> It also runs mysql and tomcat but is currently just a simple gateway, I'm not 
> trying to configure any DMZ or fancier stuff like that.
> My problem is that I can access mysql using 'localhost:3306' but I can't access 
> it on the same box when using the machine name e.g. 'isengard:3306' and my guess 
> is that I have mis-configured either dnsmasq or iptables.
> I figure that my command "mysql --host=isengard" is probably being resolved as 
> external and then getting blocked by the firewall.
> My dnsmasq config file, based on the example config but with comments removed, is:
> domain-needed
> bogus-priv
> filterwin2k
> local=/localdomain/
> domain=localdomain
> dhcp-range=,
> dhcp-option=option:router,
> dhcp-option=option:mtu,1500
> and my resolv.conf file is:
> nameserver
> and I think this is getting continually rewritten by dhcp with the nameserver 
> info from the dhcp server on the modem which gives the outside NIC its internet 
> ip address.
> Does this make any sense? Or rather does anyone see where my situation is 
> foobarred?

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