How to properly use Layer2 Isolation on USG ATP/FlEX

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Zyxel_Kevin
Zyxel_Kevin Posts: 958  Zyxel Employee
Zyxel Certified Network Administrator - Security Zyxel Certified Sales Associate 100 Answers 500 Comments
edited February 17 in Networking

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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