Setup server port forwarding using your Xfinity main router and an ASUS secondary device.
Setup server port forwarding using your Xfinity main router and an ASUS secondary device.
Set up a dedicated WiFi network using your second router for your home server. You plan to run a simple Minecraft server for friends, and you’ve already configured the device port forwarding correctly on the secondary router (ASUS). This allows access within that local network. When trying to reach the server from other networks, including the main router, it fails. You tried using the server’s port and the router’s IPv6 address (10.0.0.177), but the issue persists. Since you can’t assign a specific IP through the Xfinity app, only select devices that are connected. Consider checking the router’s settings or using a static IP for better reliability.
Why not link the server directly to the Xfinity Gateway? It’s complicating things for you. That second router forces double NAT and adds another firewall that the server must pass through. In my view, there are two choices. Option A: Switch the ASUS router to AP mode and connect the server solely via Wi-Fi. Option B: Set the Xfinity gateway to Bridge mode (acting as a modem only) and rely on the Asus router as your main gateway. Xfinity’s interface makes it tough to adjust settings, requiring their app. I haven’t managed to set up port forwarding through two routers like this.
The given address is an IPv4 format. To enable it, you'd need to configure port forwarding between both routers. Send traffic from your external router's IP and port to the second router's "external" IP and a random port. Then route from the second router's "external" IP and the selected port to the server's IP and port. For instance, <external-ip>:8080 → 10.0.0.177:12345 and 10.0.0.177:12345 → 192.168.1.2:8080. When a request hits port 8080 on your external IP, the first router will forward it to the second router's port 12345, which then sends it to the server on port 8080.
it's simple in practice. with the first setup (xfinity example), you redirect traffic to the second router's wan IP, then forward to the servers LAN address. for providers offering DMZ support for routers, it's essentially just port forwarding all the necessary ports.
I understand what they're saying, but I've tried before and it didn't work. As mentioned, you can't forward traffic based on IP addresses—it depends on the device. This means they'll need to determine how the ASUS router is listed in their system. They also have to rely on the configuration working. My friend uses an Xfinity gateway, but even with correct settings, it wouldn't work. Running two routers in router mode isn't ideal; having one router on your network is better. The OP should choose either the Xfinity gateway or the ASUS router to use. Xfinity does support bridge mode on their gateways, so it's simple to switch it in and use a more suitable router.