ZyXEL Communications ZyWALL USG-Series - Layer 2 Isolation; Layer 2 Isolation Overview; Chapter 24 Layer 2 Isolation

ZyWALL / USG (ZLD) CLI Reference Guide 160
CHAPTER 24
Layer 2 Isolation
24.1 Layer 2 Isolation Overview
Layer-2 isolation is used to prevent connected devices from communicating with each other in the
ZyWALL / USG’s local network(s), on which layer-2 isolation is enabled, except the devices in the
white list.
Note: Layer-2 isolation does not check the wireless traffic.
In the following example, layer-2 isolation is enabled on the ZyWALL / USG’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.
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 17 Layer-2 Isolation Application