ZyXEL Communications USG40W - Chapter 18 Layer 2 Isolation; Overview; What You Can Do in this Chapter; Layer-2 Isolation General Screen

ZyWALL USG Series User’s Guide
480
CHAPTER 18
Layer 2 Isolation
18.1 Overview
Layer-2 isolation is used to prevent connected devices from communicating with each other in the Zyxel
Device’s local network(s), except for the devices in the white list, when layer-2 isolation is enabled on
the Zyxel Device and the local interface(s).
Note: The security policy control must be enabled before you can use layer-2 isolation.
In the following example, layer-2 isolation is enabled on the Zyxel Device’s interface Vlan1. A printer, PC
and AP are in the Vlan1. The IP address of network printer (C) is added to the white list. With this setting,
the connected AP then cannot communicate with the PC (D), but can access the network printer (C),
server (B), wireless client (A) and the Internet.
Figure 343 Layer-2 Isolation Application
18.1.1 What You Can Do in this Chapter
• Use the General screen (Section 18.2 on page 480) to enable layer-2 isolation on the Zyxel Device
and the internal interface(s).
• Use the White List screen (Section 18.3 on page 481) to enable and configures the white list.
18.2 Layer-2 Isolation General Screen
This screen allows you to enable Layer-2 isolation on the Zyxel Device and specific internal interface(s).
To access this screen click Configuration > Network > Layer 2 Isolation.