DHCP guarding is an often overlooked layer of network security. DHCP guarding tells your switch to watch broadcast traffic for DHCP and if the specified dhcp server(s) aren’t the devices handing out DHCP — it kills the traffic and doesn’t allow unauthorized DHCP servers to operate. Other vendors implement this protection and may call it something different. It’s quick and easy to setup on UniFi. If you want to see this setup on other vendors please let me know below!
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