routing from the outside in

Can somebody point me to a simple howto on getting a redhat 9 box on the
internal network seen from the outside on port 80?

INTERNET
|
\/
ippp0
REDHAT 7.3 (2.2 kernel)
eth0
|
\/
INTERNAL NETWORK
INCLUDING RH9 BOX (192.168.0.150)

Many thanks in advance
Mike Dixon

On Wed, 12 Nov 2003 14:44:18 +0000, Mike Dixon wrote:

> Can somebody point me to a simple howto on getting a redhat 9 box on the
> internal network seen from the outside on port 80?
>
> INTERNET
> |
> \/
> ippp0
> REDHAT 7.3 (2.2 kernel)
> eth0
> |
> \/
> INTERNAL NETWORK
> INCLUDING RH9 BOX (192.168.0.150)
>
> Many thanks in advance
> Mike Dixon

You have to forward your router's port 80 to the internal box. You want to
use iptables for that. My rule for that looks like this:

iptables -A PREROUTING -t nat -p tcp -i $EXT_INTERFACE --dport 80 \
-j DNAT --to 192.168.0.150:80

For more help take at look at 'man iptables'.

Dragan

"Dragan Colak" <(E-Mail Removed)> wrote in message
news(E-Mail Removed)...
> On Wed, 12 Nov 2003 14:44:18 +0000, Mike Dixon wrote:
>
> > Can somebody point me to a simple howto on getting a redhat 9 box on the
> > internal network seen from the outside on port 80?
> >
> > INTERNET
> > |
> > \/
> > ippp0
> > REDHAT 7.3 (2.2 kernel)
> > eth0
> > |
> > \/
> > INTERNAL NETWORK
> > INCLUDING RH9 BOX (192.168.0.150)
> >
> > Many thanks in advance
> > Mike Dixon
>
> You have to forward your router's port 80 to the internal box. You want to
> use iptables for that. My rule for that looks like this:
>
> iptables -A PREROUTING -t nat -p tcp -i $EXT_INTERFACE --dport 80 \
> -j DNAT --to 192.168.0.150:80
>
> For more help take at look at 'man iptables'.
>
> Dragan
>
Hi Dragan
I too have the same problem as Mike, but when I tried your fix I got this
answer:
Warning weird character in interface '--dport' (No aliases, :, ! or * ). bad
argument '80'
Any ideas would be welcome.
Leslie Cox.

"Leslie Cox" <(E-Mail Removed)> wrote in
newsOCsb.31000$Ws6.6302@edtnps84:

>
> "Dragan Colak" <(E-Mail Removed)> wrote in message
> news(E-Mail Removed)...
>> On Wed, 12 Nov 2003 14:44:18 +0000, Mike Dixon wrote:
>>
>> > Can somebody point me to a simple howto on getting a redhat 9 box
>> > on the internal network seen from the outside on port 80?
>> >
>> > INTERNET
>> > |
>> > \/
>> > ippp0
>> > REDHAT 7.3 (2.2 kernel)
>> > eth0
>> > |
>> > \/
>> > INTERNAL NETWORK
>> > INCLUDING RH9 BOX (192.168.0.150)
>> >
>> > Many thanks in advance
>> > Mike Dixon
>>
>> You have to forward your router's port 80 to the internal box. You
>> want to use iptables for that. My rule for that looks like this:
>>
>> iptables -A PREROUTING -t nat -p tcp -i $EXT_INTERFACE --dport 80 \
>> -j DNAT --to 192.168.0.150:80
>>
>> For more help take at look at 'man iptables'.
>>
>> Dragan
>>
> Hi Dragan
> I too have the same problem as Mike, but when I tried your fix I got
> this answer:
> Warning weird character in interface '--dport' (No aliases, :, ! or *
> ). bad argument '80'
> Any ideas would be welcome.
> Leslie Cox.
>
>

What did you actually type after the -i ? Should be ippp0 in the OP's
example. i.e the name of the interface that connects the router to the
internet.

L.