D-Link DSL-2540U User Manual page 19

Adsl2/2+ 4-port ethernet router

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When finished, click on Next to proceed to the NAT Settings screen.

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Enable NAT:

multiple computers on your LAN.

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Enable Firewall:

security.

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Enable IGMP Multicast:

multicasts, mostly used in video streaming.

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Enable WAN Service:

the service name.

Select enable if you wish to share one WAN IP address for

Select if you wish to enable the router's firewall for

Select enable if you wish to be able to provide

Select if you wish to use WAN service and then set

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