Asus AM604g - Manual (Page 26)

Click on the Save button when the settings are correct. The
below screen will appear showing the WAN settings that you
made. When satisfied with the settings, and no changes are
necessary, click on the Finish button. To remove any settings,
click on the Remove button.
After selecting the Finish button, the below screen will appear. At
this point, the router will reboot to save the changes made.
ASUS 4-Port Wireless Ethernet Router
User Manual
25
Version 1.0
Document #: BD-AU0014-10