The forwarding ports are not functioning properly.
The forwarding ports are not functioning properly.
Hello! Here’s a revised version of your message:
Hi! Before I begin, this is the configuration I use at home: M = Modem/Router, W = Asus router. I only use it for Wi-Fi S = Switch, PC = My computer, and SERV = My server. I need to forward my server’s port for game servers since I’ve always been good at helping friends with this. Port forwarding isn’t working—I want to open the port in the modem where the server is connected and add an exception in the Windows firewall for that specific port. I’ve tried both TCP and UDP settings. I set the server in DMZ mode, but nothing seems to work. I’ve asked friends who know more and even contacted my ISP, but they couldn’t find any issues. I have two switches and have tried using both. Do you have any suggestions? Are there any details I missed in the modem settings that could help? Thanks!
Capture the port forwarding interface. Conceal your public IP for privacy. The diagram you shared clarifies the configuration. To verify port accessibility, try accessing it from another device—this helps confirm if it's open or blocked. If using gaming apps, additional factors might affect performance beyond just port status. After setup, test with different methods to ensure proper functionality.
I don't see any mention of WAN IP anywhere. It seems all your devices are connected to 192.168.0.1 through 255, and you think the modem uses a WAN connection since it's the same box but linked via TV cable. I don’t understand if you misread. This is the only device you have, and you’ve reset it twice already. When you fill the external host with both 0.0.0.0 and nothing, the star appears. Thanks for the info, it looks great. You can check https://www.canyouseeme.org/ and https://www.whatsmyip.org/port-scanner/ for more details.
WAN IP represents your public address outside the network. It seems you've configured it properly based on what I can see. It appears the external host could be your personal public IP (you might need to input it if required) or an IP you wish to be the sole point of access for that port forwarding. The exact setup depends on the router or modem software.
WAN is your public IP for the connection to your ISP. If it falls between 10.x.x.x and 100.127.x.x or 100.64.x.x through 100.64.x.x, you're using CG-NAT and can't forward ports from the internet to your server directly.
The WAN public IP is 84.x.x.x. I've also tried using it in the External host setting, but the server remains in DMZ with no connection.
As long as the modem's public IP aligns with what the port checker shows, you're likely not experiencing CGNAT issues.