ZyXEL Communications 2WG manual 206

Chapter 9 DMZ Screens

The ZyWALL has a single DMZ interface. Even though more than one of ports 1~4 may be in the DMZ port role, they are all still part of a single physical Ethernet interface and all use the same IP address.

The ZyWALL supports three logical DMZ interfaces via its single physical DMZ Ethernet interface. The ZyWALL itself is the gateway for each of the logical DMZ networks.

The IP alias IP addresses can be either private or public regardless of whether the physical DMZ interface is set to use a private or public IP address. Use NAT if you want to make DMZ computers with private IP addresses publicly accessible (see Chapter 17 on page 385 for more information). When you use IP alias, you can have the DMZ use both public and private IP addresses at the same time.

"Make sure that the subnets of the logical networks do not overlap.

To change your ZyWALL’s IP alias settings, click NETWORK > DMZ > IP Alias. The screen appears as shown.

Figure 123 NETWORK > DMZ > IP Alias

The following table describes the labels in this screen.

Table 48 NETWORK > DMZ > IP Alias

LABEL	DESCRIPTION
Enable IP Alias 1,	Select the check box to configure another DMZ network for the ZyWALL.
2
IP Address	Enter the IP address of your ZyWALL in dotted decimal notation.
	Note: Make sure the IP addresses of the LAN, WAN, WLAN and
	DMZ are on separate subnets.

206
	ZyWALL 2WG User’s Guide