PLANET SG-500 - Manual (Page 110)

SG-500 VPN Security Gateway User’s Manual
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In this section, we will have detailed introduction and instruction of Mapped IP and Server
1/2/3/4:
Mapped IP: Because the Intranet is transferring the private IP by NAT Mode (Network Address
Translation). And if the server is in LAN, its IP Address is belonging to Private IP Address. Then
the external users cannot connect to its private IP Address directly. The user must connect to the
SG-500’s WAN subnet’s Real IP and then map Real IP to Private IP of LAN by the SG-500. It is a
one-to-one mapping. That is, to map all the service of one WAN Real IP Address to one LAN
Private IP Address.
Server 1/2/3/4: Its function resembles Mapped IP’s. But the Virtual Server maps one to many. That
is, to map a Real IP Address to 1~4 LAN Private IP Address and provide the service item in Service.