Hello Shaka,

I'm afraid I don't totally understand. The ports needed for hosting seem to be 8793 and 18321. those two should be openen at router and firewall.

Router will cause more problems then a firewall. You can configure most firewalls easily to allow shogun to have contact with the internet.

If you have a router, and really want to host, there's an easy but fairly expensive way to achieve your goal. Get a looooong usb cable and plug it in your computer, and in your modem. plug out the router, and see if you still have connection. if yes, try hosting a game. It will work, almost certainly.