Mac Internet Sharing Port Forwarding??

Hey there.
I'm sure this is a problem alot of people may have had before and i was wondering if anyone has a solid solution.

I live in an apartment block, which simple plug in internet (I plug in to the wall and its connected). I connect to this with my iMac and then share the connect over WiFi.
I've managed to get my MacBook and PS3 to connect to it with no troubles.

Now i need to forward ports for gaming (Steam and PSN)...

I've googled, but can't find anything solid... It's quite confusing to me...

Any help would be awesome. THANKS!

Hansr said:

http://www.cyberciti.biz/faq/howto-configure-macosx-as-nat-router/

But there are you sure the internet connection from the socket is non-NATed and passes through all ports?

A dedicated router would definitely be a better choice in the long run.

Click to expand...

I think so. and yeah im thinking i should just get a router...

The link you posted requires you to run the script every boot doesnt it?

thanks for the reply