Yikes...re-enable your firewall ASAP! The easiest way to get things working is to enable uPNP on the router, combined with enabling the auto router config option in icamsource...then possibly rebooting the router and your computer for good measure. Next time you start icamsource, you should get some uPNP (success or error) messages. If following those directions doesn't work, you'll probably have to enable manual port forwarding, which is a pain...but will result in very stable results.