Port Forwarding for Static IPs?

Thanks, my-spot! The Comcast Modem can only manage port rules for private addresses being managed by the Comcast Modem (private LAN DHCP.) Port rules are generally not set up behind a public address. If you have any more questions and would like me to take a deeper look at your Comcast Business Network settings, send me your name, the business name, the complete service address (including city, state, ZIP, suite number, etc), and the phone or account number.

Hi my-spot! Is the gateway a rented one from us? 

Yes, it is a comcast supplied DPC3941B...

If this comes up again, I was able to solve this by using a spare Windows server and the following command...

netsh interface portproxy add v4tov4 listenport=90 listenaddress=192.168.1.212 connectport=90 connectaddress=192.168.2.5

The I NAT the router to send the one public IP's to 192.168.1.212 and using the above command the server can send it anywhere I need. Simple, Easy, and it worked...

Thanks for posting the solution, my-spot! We really appreciate it 🙂 If you happen to need anything in the future you can always send us a private message, but for now thanks so much for letting us know and I hope you have a lovely day!