port forwarding?

sde · 03-02-2004, 09:13 AM

can anyone give me any tips on where to go to forward ports?

i have 2 ips i can use and i want to forward port 8443 of 1 ip to port 80 of another.

this system is rh9

Belisarius · 03-02-2004, 10:27 AM

I haven't done it myself, but I think you need to mess around with iptables.

redhead · 03-02-2004, 11:00 PM

Quote:

Originally posted by sde
i have 2 ips i can use and i want to forward port 8443 of 1 ip to port 80 of another.

Code:

~ > iptables -t nat -A PREROUTING -d 1.2.3.4 \
        -p tcp --dport 8443 -j DNAT --to 5.6.7.8:80

sde · 03-03-2004, 07:05 PM

it didn't like the '-p' .. and i'm really afraid to experiment with different things on this one .. heh

redhead · 03-04-2004, 01:23 AM

Try changing '-p' to '--proto' it should accept that.
http://www.iptables.org/documentatio...-HOWTO-10.html

sdeming · 03-05-2004, 10:20 AM

On RH9 you can also use xinetd to listen on one IP/port and redirect to another IP/port. Might bet worth looking into if you can't get the iptables bit to work.

Also, if it's 8443 then it is likely https traffic so you'll want to forward to port 443.