Customer wants to configure ProxySG to use NTP servers (Internal or External) other than the default ones ntp.bluecoat.com and ntp2.bluecoat.com.
NTP servers are used by ProxySG as a reference point to get accurate time. The time sync is performed at a regular interval to keep the skew minimized.
Resolution
To configure NTP servers, follow the steps below:
Login to Web Management Console of ProxySG.
Navigate to Configuration > General > Clock > NTP tab
Click on "New" and enter an IP Address or FQDN of an NTP server
Click "OK" to add the entry to the NTP servers list.
Repeat steps 3 and 4 to add more servers.
NTP servers are accessed in the order displayed. You can organize the list of servers by using "Promote entry" or "Demote entry" as appropriate.