Why are my APs not communicating logs to Nebula?

Zyxel_Bella

There seems to be a network configuration issue preventing your APs from properly communicating with Nebula. Follow these steps to resolve this issue:

Steps:

Check Firewall Rules: Make sure that the firewall rules on your network allow the APs to communicate with Nebula's servers. Verify that the necessary ports (UDP ports 123 and TCP ports 80, 443, 4335, 6667) are open for outbound traffic from the APs.

Ensure DNS Settings: Ensure that the DNS server can resolve NTP server (Network Time Protocol: *.pool.ntp.org)or set it to a public one (8.8.8.8) to prevent time synchronization issues.

Verify IP Addresses: Depending on the region, the IP addresses for NTP servers may vary. You can SSH into the AP to check the NTP server and nslookup results.

Toaccess the AP via SSH:

Router> show ntp server

Router> nslookup pool.ntp.org

Additional Troubleshooting:

• If the APs are still not online, collect a diagnostic file for further analysis.
• Check the Cloud Control Status when the AP is offline on Nebula for additional information.

The issue could be due to blocked IPs that are required for NTP requests. You can temporarily set the NTP server to an allowed IP through your firewall while implementing a new NTP solution. This should help your access points work as expected.

For further assistance, please refer to: 

What are the firewall ports required to use Zyxel Nebula Control Center?