Edimax Technology AR-7266WNA - Manual (Page 87)

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Parameter Description
IGMP Proxy Enable or disable IGMP proxy feature.
Proxy Interface The upstream WAN interface is selected here.
When you finish, click ‘Apply Changes’. You’ll see the following message
displayed on web browser:
Press ‘Continue’ to save the settings made and back to web management
interface; press ‘Apply’ to save the settings made and restart the router so the
settings will take effect after it reboots.
5.2.7. Firewall