What does NCAS disconnected mean in event logs?

Zyxel_Dean
Zyxel_Dean Posts: 243  Zyxel Employee
edited August 3 in Nebula Access Point
What does NCAS disconnected mean in event logs?

Upon seeing this log "No response from NCAS over 15 seconds: NCAS disconnected", this indicates the NAP has lost connection with Nebula Cloud Authentication Server (NCAS) . 
When the connection is built again, the eventlogs will show "NCAS connected: 204 Server is alive".

Impact: 
When the NAP is disconnected from NCAS, no longer will cloud authentication be available to authorize clients. Instead the authentication falls back to "NCAS disconnection behavior", which you can choose to allow all connections or limit the access under this scenario.

To check the connectivity, trace route to s.nebula.zyxel.com. The servers are hosted on Amazon Web Services (AWS), you can trace route and check if the route is available to pass through Amazon domains.