How to properly use Layer2 Isolation on USG ATP/FlEX

Zyxel_Kevin
Posts: 958
Zyxel Employee





Question
How can I effectively use Layer2 Isolation on the USG ATP/FLEX to ensure some clients communicate while others remain isolated?
Answer:
Layer2 Isolation on the USG ATP/FLEX is designed to allow or block communication between clients on the same subnet.
If you think it's not working as expected
- Try flushing the ARP cache on the clients to ensure the firewall can handle ARP replies.
- For a more reliable setup, apply Layer2 Isolation on a Layer 2 switch instead of the firewall.
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