Go to Settings > Network > Advanced Settings and note your console's IP address. Log in to your router and enter the console's IP address. On your console, go to Settings > Network > Test Network Connection and follow the connection prompts. Go to your router's port forwarding tools and open 88, 500, 3544, 4500 (for UDP), and 3074 (TCP). Go back to Settings > Network and select Test NAT type.