PLANET SG-500 - Manual (Page 20)

SG-500 VPN Security Gateway User’s Manual
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NAT Mode:
„ It allows Internal Network to set multiple subnet address and connect with the Internet through
different WAN IP Addresses. For example, the lease line of a company applies several real IP
Addresses 168.85.88.0/24. The company is divided into R&D department, service, sales
department, procurement department, and accounting department. The company can
distinguish each department by different subnet for the purpose of managing conveniently. The
settings are as the following：
1. R&D department subnet：192.168.1.1/24 (LAN) ÅÆ 168.85.88.253 (WAN)
2. Service department subnet： 192.168.2.1/24 (LAN) ÅÆ 168.85.88.252 (WAN)
3. Sales department subnet： 192.168.3.1/24 (LAN) ÅÆ 168.85.88.251 (WAN)
4. Procurement department subnet
192.168.4.1/24 (LAN) ÅÆ 168.85.88.250(WAN)
5. Accounting department subnet
192.168.5.1/24 (LAN) ÅÆ 168.85.88.249(WAN)
The first department (R&D department) had set while setting interface IP; the other four ones have
to be added in Multiple Subnet. After completing the settings, each department uses the different
WAN IP Address to connect to the Internet. The settings of each department are as following:
Service Sales Procurement Accounting
IP Address 192.168.2.2~254 192.168.3.2~254 192.168.4.2~254 192.168.5.2~254
Subnet Netmask 255.255.255.0 255.255.255.0 255.255.255.0 255.255.255.0
Gateway 192.168.2.1 192.168.3.1 192.168.4.1 192.168.5.1
Routing Mode:
„ It is the same as NAT mode approximately but does not have to correspond to the real WAN IP
address, which let internal PC to access to Internet by its own IP (External user also can use the
IP to connect with the Internet).