Nlynx Wireless Gateway Switch User Manual


 
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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), RIP-1
(send RIP version 1 packets), RIP-1 Compatibility (send RIP version
1 packets, but internally support RIP version 2 functions), and RIP-2
(send RIP version 2 packets).
The RX setting controls the handling of routing information received
from such devices. Possible settings are None (ignore all RIP packets),
RIP-1 only (accept only RIP version 1 packets), RIP-2 only (accept
only RIP version 2 packets), and RIP-1/RIP-2 (accept both kinds of
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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