Billion BiPAC 5200W RC User Manual page 46

4.3.2 NAT
The NAT (Network Address Translation - NAT, RFC 1631) is the translation of the IP address
of a host in a packet. The default setting is Dynamic NAT. It provides dynamic Network
Address Translation capability between LAN and multiple WAN connections, and the LAN
traffic is routed to appropriate WAN connections based on the destination IP addresses and
Route Table. This eliminates the need for the static NAT session configuration between
multiple LAN clients and multiple WAN connections.
Virtual Circuit: VPI (Virtual Path Identifier) and VCI (Virtual Channel Identifier) define a
virtual circuit. There are eight groups of PVC can be defined and used.
NAT Status: Show the NAT status, Activated or Deactivated.
Number of IPs: User can select Single or Multiple.
DMZ
The DMZ Host is a local computer exposed to the Internet. When setting a particular internal
IP address as the DMZ Host, all incoming packets will be checked by the Firewall and NAT
algorithms then passed to the DMZ host, when a packet received does not use a port
number used by any other Virtual Server entries.
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