Nebula device offline possible reasons
There are possibilities lead Nebula devices offline on Nebula Control Center.
[First]
You may not plug a power cord into your Nebula device(s).
[Second]
Your device(s) may have a hardware issue or it's faulty.
[Third]
Your device(s) might have the following network issues:Use the links to verify if your network allows port 4335 or 6667.
- The device(s) does not get an usable IP address.
- The device(s) cannot reach TCP port 4335/6667.
- The device(s) cannot synchronize Network Time Protocol(NTP) via UDP port 123.
- The device(s) DNS cannot resolve d.nebula.zyxel.com.
Test port 4335
Test port 6667