The LAN Interface settings control whether and how the Wireless Gateway uses RIP with any routing devices networked to it through its LAN ports.
∙The TX setting controls the transmission of routing information to such devices. Possible settings are None (send no RIP packets),
∙The RX setting controls the handling of routing information received from such devices. Possible settings are None (ignore all RIP packets),
The WAN Interface settings control whether and how the Wireless Gateway uses RIP with any routing devices networked to it through its WAN port. The available TX and RX settings are the same as those for the LAN interface, and their effects are the same except that they control RIP use through the WAN port.
NAT/Router Mode
NAT stands for Network Address Translation. NAT is ordinarily used when only the WAN port has a “globally legal” IP address and machines on the LAN all use “private addresses.” In NAT operation, the Wireless Gateway modifies outgoing packets so their source IP address is that of the Wireless Gateway's WAN port. All machines on the LAN thus appear to be a single machine to outside devices. The Wireless Gateway also makes other necessary modifications of each outgoing packet, so that return packets can be directed to the correct machines on the LAN. Since all machines on the LAN appear to have the same IP address to outside devices, NAT operation is also known as “IP sharing.”
NAT mode must be used when the machines on the LAN all use private addresses. It can also be used as a partial firewall when the machines on the LAN use globally legal IP addresses but no routing devices other than the Wireless Gateway exist on the LAN.
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