For details of Windows firewall port settings, click on Figure 1,2 and 3.
Therefore, if you consider issues like accuracy, reliability and security important for your network, an independent NTP/SNTP server is strongly recommended alternative to do the job.
Meinberg high quality time servers offer a broad spectrum of time synchronization solutions for networks of any size and industries.
For more information, see How to update content and definitions on the clients and Downloading content from Live Update to the Endpoint Protection Manager.
In certain environments, you may want to download updates from an internal Live Update server rather than obtain updates from the Internet source servers.
But in the console it is showing an incorrect address which I assume is from the DB.