As your network changes, you will probably need to adjust the time synchronization settings on your servers.
This method works both in the GUI and at the shell prompt and is the most reliable method for ensuring a successful NTP implementation.
Launch YaST on your SLES 9 server by either navigating to the application on the desktop or typing yast at the shell prompt.
Click (or select using the tab and arrow keys)> .
In thedialog box, click .
Modify the NTP time settings as your needs require.
Time synchronization settings and their modification possibilities are documented in the following administration guides: