If you are using Motorola WiMax CPEi25725 modem, your default gateway is probably 192.168.15.1. Now, here are the steps on how to Port Forward on you modem.
- Open a browser, type 192.168.15.1 on the url address bar.
- Type motorola for password.
- On the upper right side, click Port Forwarding.
- If you only have one device behind the router, use DMZ or else, click Forwarding for you to add devices.
- For DMZ, Type in the IP address of the device you want to access from the internet.
- Click Apply.
- For Forwarding, Click radio button for Select.
- Choose TCP.
- Enter Start - End WAN Port.
- Enter IP Address.
- Enter Start - End LAN Port.
- Click Enabled.
- Click Add, and then Apply to save your configurations.