Configuring an Interface (Cont'd)
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Typically, NAT Enable should be set to Enable for proper WAN-to-LAN IP
translation.
Enabling Fullcone NAT Enable may help with passing SIP and multicast traffic
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on an interface, but is less secure than the default Symmetric NAT used by
interfaces.
If the interface is routed and being used for IPTV or other multicast traffic,
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check IGMP Proxy Enable.
If the interface is being used as the primary data connection for LAN users,
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check Apply as Default Gateway.
Note: only one interface can use the Apply as Default Gateway option.
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