Configuring GW to DSL Internet

[Didar Hossain]

On Wed, Jan 6, 2010 at 1:15 PM, j.halifax . <j.halifax at seznam.cz> wrote:
> Hi All,
>
> Pleaase help me in configuring FC12_64 as DHCP & FW & GW to ADSL Internet.
>
> I have:
> - eth0 (xxx.39.189.92) connected to one port of the DSL router, eth0 configured with DSN' of ISP
> - eth2 (10.255.250.37) connected to the local LAN, eth2 configured with DNS' of ISP
> - DNS' of ISP are defined also in resolv.conf
> - named is running
> - dnsmasq running for eth0 (connected to DSL router port)
> - iptables running
> - FW has dns ports (53) open
> - FW has eth2 (to internal LAN) as trusted interface
> - Internet is accessible in that box (via eth0), websites in internal LAN as well (via eth2).
>
> >From another box in the LAN:
>> ping 10.255.250.37
>    responds normal way
>> host isp.com 10.255.250.37
>   doesn't respond
>   (in the 10.255.250.37 box the tcpdump shows requests coming in port 53, but they are not forwarded to superior ISP DNS and SUGHUP1 to dnsmasq reports 0 requests received/answered/failed/retried/sent)
>
> My question is: What is it incorect in my configuratins?

Maybe you need to -
echo 1 > /proc/sys/net/ipv4/ip_forward

and

iptable -t nat -A POSTROUTING -s 10.255.250.0/24 -j SNAT --to xxx.39.189.92


Regards,
Didar