# Engine Editor > General > NTP

Use this branch to enable NTP time synchronization and select NTP servers for the Security Engine.

Option | Definition
--- | ---
Enable time synchronization from NTP server | When selected, the Security Engine uses an external NTP server for time synchronization.
Preferred (Optional) | When selected, the Security Engine uses the specified NTP server by default.
NTP Server | Lists the available NTP servers. Double-click the cell to select an NTP server. Click Add to add a row to the table, or Remove to remove the selected row.