Netgear 834 port forwarding to different internal port?

Hi All,
Is it possible on a Netgear 834 to port forward to a different port on
the internal IP?
E.g. If I've got something that's running internally on port 8080, and
I want to access it from outside on port 80, I'd like to setup a port
forward to send external IP port 80 to my internal IP port 8080.
Anyone know if this is doable?

Ric

 

....to update: I'm talking about public/private ports. I'm sure my
crappy old Conexants allowed this, the Netgear doesn't seem to.

 

No, it doesn't. Annoying, eh?

Time to get a router that runs Tomato, I suppose. What other routers
do proper port-forwarding OOtB, folks?

Cheers - Jaimie

 

AAAAAAAAAAAAAAAAAAAAAAAARGH. <pause for breath>
AAAAAAAAAAAAAAAAAAAAAAAARRRRRRRRRGH.
bloody netgear. i'd just assumed it was in there, buried in the menus
somewhere.
<googles> no thirdparty firmware for them, either.

 

Why not just run the service on the port that the router forwards to?

 

Because it's Apache on OS X and Unix doesn't seem to let you run
anything on ports <1024 unless you're running as root. Apart from the
built in services, anyway. I have only just discovered this.
Going to have to use Apache rewright in httpd.conf to get the Apache
server to forward to the app's server, I think.

 

Can't you just forward port 80 using ipfw? I found this:

//
ipfw add 2 fwd 127.0.0.1, 3128 tcp from any to any 80 in recv en1


this says , any traffic incoming on ethernet interface en1 destined for
port 80 redirect to port 3128
//

http://www.mail-archive.com//msg01375.html

 

Some clues here:
http://www.plug.org/pipermail/plug/2004-April/005962.html
Should work if you can telnet to the Netgear box.

 

Most Unix services will start as root to bind to a port <1024 and then
drop root privileges, forking as a regular system user. Like Apache
will start from init as root and then carry on as www-user/apache or
something similar. Perhaps your app will do that?

Could be messy, what about ipfw? I'm no OSX guru - but probably
something like:

ipfw add <rule_no.> fwd <ip>,80 tcp from any to any <dest_port> \
in via <interface>

I don't know where OSX stores it's firewall rules tho'.