ZyXEL Communications 70 Series - Manual (Page 167)

ZyWALL 5/35/70 Series User’s Guide
167 Chapter 8 DMZ Screens
8.4 DMZ IP Alias
IP alias allows you to partition a physical network into different logical networks over the
same Ethernet interface. The ZyWALL supports three logical DMZ interfaces via its single
physical Ethernet interface with the ZyWALL itself as the gateway for each DMZ network.
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 22 on page 374 for more
information). When you use IP alias, you can have the DMZ use both public and private IP
addresses at the same time.
Note: Make sure that the subnets of the logical networks do not overlap.
To change your ZyWALL’s IP alias settings, click NETWORK, DMZ and then the IP Alias
tab. The screen appears as shown.
Figure 65 DMZ: IP Alias
The following table describes the labels in this screen.
Table 47 DMZ: IP Alias
LABEL DESCRIPTION
Enable IP Alias 1,
2
Select the check box to configure another DMZ network for the ZyWALL.
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.