ZyXEL Communications 2 Plus 9.5 DMZ Public IP Address Example, 9.6 DMZ Private and Public IP Address Example

Chapter 9 DMZ Screens

9.5 DMZ Public IP Address Example

The following figure shows a simple network setup with public IP addresses on the WAN and DMZ and private IP addresses on the LAN. Lower case letters represent public IP addresses (like a.b.c.d for example). The LAN port and connected computers (A through C) use private IP addresses that are in one subnet. The DMZ port and connected servers (D through F) use public IP addresses that are in another subnet. The public IP addresses of the DMZ and WAN ports are in separate subnets.

Figure 114 DMZ Public Address Example

9.6 DMZ Private and Public IP Address Example

The following figure shows a network setup with both private and public IP addresses on the DMZ. Lower case letters represent public IP addresses (like a.b.c.d for example). The LAN port and connected computers (A through C) use private IP addresses that are in one subnet. The DMZ port and server F use private IP addresses that are in one subnet. The private IP addresses of the LAN and DMZ are on separate subnets. The DMZ port and connected servers (D and E) use public IP addresses that are in one subnet. The public IP addresses of the DMZ and WAN are on separate subnets.

Configure one subnet (either the public or the private) in the Network > DMZ screen (see Figure 9.2 on page 171) and configure the other subnet in the Network > DMZ > IP Alias screen (see Figure 9.4 on page 175) to use this kind of network setup. You also need to configure NAT for the private DMZ IP addresses.

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