[Sarc]

I have my Mac set up as a router for a LAN using System Preferences's Sharing Pref. Pane.

However, I need to forward some ports to some of the computers. However I can't find a a config file, or anything where I can specify wich ports to forward.

Anyone ?
thx

[Sarc]

so far I stumbled with this,
but I can't get it to work properly.

anyone please ?

sudo ipfw add 101 fwd 127.0.0.1,27910 tcp from any to 192.168.10.9 27910 in

[Adam Betts]

You'd have to setup it on master computer (the one sharing the internet connection).. Open System Preferences > Sharing and you should see something like Port Mapping.

I could never figure it out after that. I'd love to serve some games but it never worked for me

[Sarc]

Originally posted by Adam Betts:
You'd have to setup it on master computer (the one sharing the internet connection).. Open System Preferences > Sharing and you should see something like Port Mapping.

I could never figure it out after that. I'd love to serve some games but it never worked for me

I can't find that "Port Mapping" thing ... is it there on your Pref. Pane ??

[ul1984]

first prepare a file called natd.conf or something, put it anywhere you like, this is an example file i made

Code:
# example       : redirect_port tcp 192.168.0.2:6667 6667
# example 2     : redirect_port tcp 192.168.0.2:2000-3000 2000-3000

# forward web traffic(port 80) to 192.168.0.5:2500
redirect_port tcp 192.168.0.5:2500 80

# bittorrent(192.168.0.3)
redirect_port tcp 192.168.0.3:6881-6889 6881-6889

# quake3 (if i remember the port correctly) (192.168.0.2)
redirect_port udp 192.168.0.2:27960 27960

now make sure that internet sharing is running, then do this:

1. open up a Terminal window and click the zoom button to make it big
2. run

Code:
ps ax | grep natd

3. copy the whole natd command(/usr/sbin/natd -alias_address....) to your clipboard
4. run

Code:
sudo killall natd

5. wait a few seconds until natd has quit, dont ask me why it takes a few seconds.
6. type "sudo " and paste in the natd command you copied and add " -f <path to your natd.conf>", similiar to this:

Code:
sudo /usr/sbin/natd -alias_address 67.31.86.11 -interface en0 -use_sockets -same_ports -unregistered_only -dynamic -clamp_mss -f /Users/joel/natd.conf

7. then run the command

that should be it
im not sure this works, but i think it should.

just remember this wont stick after a reboot, you have to rerun step 1 to 7 again, you could of course make a shell script that does this for you, but even if you dont, at least its good to have the ports you want to forward saved in a file(natd.conf) so you dont have to retype those everytime you reboot.

Good luck! i hope it works