In environments which do not have NTP server, we usually prefer Fortigate to announce time to related interfaces. However, I recently bumped into an interesting problem.
With this fortigate, time is set manually and it has never been connected to the internet. When ntp server to specific, directly connected, vlans is enabled. Even if it seems to be working none of the clients could reach out and grab time from fortigate time server.
I could not find any related info at the knowledgebase and documentation. Is there anybody who has experienced such a problem?
FYI: Fortigate should be kept offline and connection to the internet even for a brief second is not possible.