DNS setting behind NAT router

I don't know if it's possible to setup my sendmail working under Fedora
Core 3.

I have a domain name with a fixed IP. I have a wireless access point
with NAT activated between my LAN and internet. I am not going to
involve with the wireless part but just connect my linux box to the NAT
router which has DHCP server running.

My problem is how do I configure BIND and Sendmail to make Linux
working as if it was directly connected to Internet? Can I just forward
port 53, 25, 110 to the Linux box and keep all the public IP setting
unchanged and just add 192.168.x.x setting to BIND?

If it is not possible, I might have to connect Linux to internet
directly.

"Joseph" <(E-Mail Removed)> écrivait news:1123938535.485007.152090
@g43g2000cwa.googlegroups.com:

> I don't know if it's possible to setup my sendmail working under Fedora
> Core 3.
>
> I have a domain name with a fixed IP. I have a wireless access point
> with NAT activated between my LAN and internet. I am not going to
> involve with the wireless part but just connect my linux box to the NAT
> router which has DHCP server running.
>
> My problem is how do I configure BIND and Sendmail to make Linux
> working as if it was directly connected to Internet? Can I just forward
> port 53, 25, 110 to the Linux box and keep all the public IP setting
> unchanged and just add 192.168.x.x setting to BIND?

Yes, forwards the port udp&tcp/53, tcp/25 and tcp/110 from the firewall
public access to the linux box.

But take care to configure your sendmail to disable open mail relay.

For the pop access (tcp/110), I suggest you to setup an ssl access only
(tcp/990 if I remenber).


And in your bind configuration, you should enter your Internet public ip
for the external service (i.e.: smtp.your_domain should point to your
public ip, the MX record sould point to your public access too).

In your internal LAN you should use the local server ip address (smtp and
pop server=192.xxx on your lan mail client software).


Regards

> Yes, forwards the port udp&tcp/53, tcp/25 and tcp/110 from the firewall
> public access to the linux box.


Antoine EMERIT, Nice reply. What I would like to add ... it also
depends on the availibilty of the link and the bandwidth to handle the
external mails to reach this smtp host. He might like to keep the mails
to ISP reliable mailhost where all his aliases to be forwarded to a
single account and "fetchmailed" to localhost later on. Well, it needs
a special configuration in ISP's mx record.

--
Raqueeb Hassan
Bangladesh

Antoine EMERIT 寫�：

> "Joseph" <(E-Mail Removed)> écrivait news:1123938535.485007.152090
> @g43g2000cwa.googlegroups.com:
>
> > I don't know if it's possible to setup my sendmail working under Fedora
> > Core 3.
> >
> > I have a domain name with a fixed IP. I have a wireless access point
> > with NAT activated between my LAN and internet. I am not going to
> > involve with the wireless part but just connect my linux box to the NAT
> > router which has DHCP server running.
> >
> > My problem is how do I configure BIND and Sendmail to make Linux
> > working as if it was directly connected to Internet? Can I just forward
> > port 53, 25, 110 to the Linux box and keep all the public IP setting
> > unchanged and just add 192.168.x.x setting to BIND?
>
> Yes, forwards the port udp&tcp/53, tcp/25 and tcp/110 from the firewall
> public access to the linux box.
>
> But take care to configure your sendmail to disable open mail relay.
>
> For the pop access (tcp/110), I suggest you to setup an ssl access only
> (tcp/990 if I remenber).
>
>
> And in your bind configuration, you should enter your Internet public ip
> for the external service (i.e.: smtp.your_domain should point to your
> public ip, the MX record sould point to your public access too).
>
> In your internal LAN you should use the local server ip address (smtp and
> pop server=192.xxx on your lan mail client software).
>
>
> Regards

Thank you Antoine EMERIT! Your answer made me feel confident to march
to next step. Thanks for the tip you provided, too.

Joseph