ZyXEL Communications ZyWALL5UTM 4.0 User Manual

ZyWALL 5/35/70 Series User’s Guide

Chapter 5 LAN Screens

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IP alias allows you to partition a physical network into different logical networks over the 
same Ethernet interface. The ZyWALL supports three logical LAN interfaces via its single 
physical Ethernet interface with the ZyWALL itself as the gateway for each LAN network.

When you use IP alias, you can also configure firewall rules to control access between the 
LAN's logical networks (subnets).

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

The following figure shows a LAN divided into subnets A, B, and C.

Figure 37   Physical Network & Partitioned Logical Networks

To change your ZyWALL’s IP alias settings, click NETWORK, LAN and then the IP Alias 
tab. The screen appears as shown.

IP Address

Type the IP address that you want to assign to the computer on your LAN.
Alternatively, click the right mouse button to copy and/or paste the IP address.

Apply

Click Apply to save your changes back to the ZyWALL.

Reset

Click Reset to begin configuring this screen afresh.

Table 23   LAN Static DHCP