Then you configure that router so that the Gateway sends all the unsolicited traffic directly to the Router, which is instructed by UPnP how to forward the traffic.
PORT FORWARD ATT ROUTER INSTALL
But AT&T doesn't support UPnP (it's a security issue), so to use UPnP, you'll have to install another router. UPnP sort of works around that by establishing different ports and opening the firewall for them. There's no way to give it two (or more) answers to the question "where do I send traffic for port x?" So, using just the port, the Gateway has to direct the traffic to the inside device. With NAT, the destination IP for all packets are the same, the single public IP address. Unless there's an existing conversation, the source IP is useless. When a IP packet arrives from the Internet, the three pieces of addressing information are the source IP, the destination IP and the port. Repeat these steps for all the services you added in part 1.This seems like a serious issue considering there can be multiple devices on one network that are using the same ports.If you do, refer to the video link at the top of this post or just say YOLO and add them and see what happens and if you break something just go back in and remove them) I don't have any other ATT services so I just added them anyways and it's fine. Click the Add button (Warning: adding ports 80 TCP and 53 TCP I believe will show a warning popup.So before this step, make sure you have at lease connected your xbox by ethernet cable or over wifi In the Needed By Device dropdown, select your xbox, whatever it is named.In the service dropdown select one of the services you just created such as XBOX_TCP_80.Click the Return to NAT/Gaming button at the bottom.After adding all the services, you need to attach them to your xbox.Make sure to set the protocol to TCP or UDP but not the option that says TCP/UDP The bottom shows like how you enter in the values before hitting add. This is what it should look like at the top when you are done. 3075-3075 UDP (Optional: needed for CODMW only).You need to essentially add one entry for every single port.Under Manage Custom Services click on Custom Services button.Go to the NAT/Gaming tab (This actually might be when it asks for your access code, I'm not sure, just follow step 3).If your browser asks to save it, save it for the future just in case It will ask for your access code, it is on your modem/router.If you only have Fiber internet and don't have another router or don't feel like doing that, then continue on below. You can try it out, but if you have multiple I would go the route of adding your own router from the video link above.
For Select a Computer, choose the device name or IP address for the device you wish.
If you get a warning message, restart your Wi-Fi gateway. Select Settings, then Firewall, and then Applications, Pinholes and DMZ. Follow this video if you are interested in going that route: Video LinkĪlso, this only works for 1 xbox on the network I believe. To open a port for user-defined applications: Go to your gateway settings. Otherwise, if you want to be on the safe side, use your own router that works with xbox already by plugging it into the ATT modem/router and then plugging your xbox into that new router. If you have more than just internet, continue at your own risk. There is a part where adding certain ports might interfere with other ATT services.
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