Here is the reality: The modern UniFi controller (version 7.x/8.x) often drops support for legacy AirMax M-series devices. The newer "UISP" (Universal Internet Service Provider) platform, while powerful, is overkill for a simple site survey.
ubnt-discovery-v2.3.zip (Note: This is an older link and may not be active on all Ubiquiti mirrors).
The most direct and reliable source for the tool is the official Ubiquiti download link:
If you specifically require the legacy "Discovery Tool v2.x" for older devices (such as airMAX M-Series legacy hardware) that cannot be managed by newer controllers: ubnt discovery 2.3 download software
What are you trying to find?
If you are working with extremely old "legacy" hardware and must run the version 2.3 .jar file, you will need to:
The tool broadcasts proprietary Ubiquiti Discovery Protocol packets across the local subnet. Here is the reality: The modern UniFi controller (version 7
You might be asking: "Doesn't Ubiquiti have a UniFi Network Controller? Why use an old tool?"
To help find the right version or alternative for your network, please share:
: Allows users to initiate reboots or access device web management interfaces directly. Download and Security Warning The most direct and reliable source for the
: Temporarily disable the OS firewall or create an inbound rule for UDP ports 10001 and 3074.
: Direct links to open the web management interface of any discovered device.
If you are looking for more in-depth network diagnostics or automated management, you may also want to explore the UniFi Network Application or the UISP Application. If you'd like, I can: