PLANET CS-2001 - Manual (Page 116)

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3.1.6 Deploying the CS-2001 between the Gateway and the
LAN (LAN1 and DMZ1), connecting LAN1 to the user’s PC
(using NAT/Routing mode) and then connecting DMZ1 to
user’s PC (using Transparent Bridging mode)
Prerequisite Setup (Note: IP addresses used as examples only)
Gateway’s LAN (172.16.1.1). IP range: 172.16.x.x/16.
Configure Port1 as LAN1(192.168.1.1, NAT/Routing, IP range:192.168.1.x/24) and
connect it to the user’s PC (default gateway: 192.168.1.1). PCs will connect to
WAN1(172.16.1.12) and use WAN1’s IP address to access the Internet.
Configure Port2 as WAN1(172.16.1.12) and connect it to gateway’s LAN.
Configure Port3 as DMZ1(using Transparent Bridging mode) and connect it to PCs
(IP range:172.16.x.x/16, default gateway: 172.16.1.1). PCs will use the original
addresses to access the Internet.