Vigor2912 Series User’s Guide
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After finishing all the settings here, please click OK to save the configuration.
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Address Mapping is used to map a specified private IP or a range of private IPs of NAT subnet
into a specified WAN IP (or WAN IP alias IP). Refer to the following figure.
Suppose the WAN settings for a router are configured as follows:
WAN1: 202.211.100.10, WAN1 alias: 202.211.100.11
WAN2: 203.98.200.10
Without address mapping feature, when a NAT host with an IP say "192.168.1.10" sends a
packet to the WAN side (or the Internet), the source address of the NAT host will be mapped
into either 202.211.100.10 or 203.98.200.10 (which IP or mapping is decided by the internal
load balancing algorithm).
With address mapping feature, you can manually configure any host mapping to any WAN
interface to fit the request. In the above example, you can configure NAT Host1 to always
map to 202.211.100.10 (WAN1); Host2 to always map to 202.211.100.11 (WAN1 alias);
Host3 always map to 203.98.200.10 (WAN2) and Group 1 to always map to 202.211.100.10
(WAN1).
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