Secure Mobile Access 12.4 Administration Guide

Configuring Time Settings

Changing the time or time zone immediately restarts the appliance. All current user sessions will be closed.

To set the date and time referenced on the appliance and in system logs, select a time zone and then set the local time, if necessary. There are two ways to set the current time: manually, or by synchronizing with one or more Network Time Protocol (NTP) servers.

To change the time zone

  1. In the AMC, navigate to System Configuration > General Settings.

  2. In the Appliance Options section, click Edit.

  3. In the Date/time area, click Change for Time zone.

    The Set Current Time Zone dialog displays.

  4. Select your current local time zone from the Time zone drop-down menu, which shows the time as Greenwich Mean Time (GMT).

  5. Apply your pending changes.

To manually configure the system time

If you are using a SonicWall-provided evaluation license, do not move your system time backward from the current time; doing so will disable all services on your appliance for licensing reasons.

  1. In the AMC, navigate to System Configuration > General Settings.

  2. In the Appliance Options section, click Edit.

  3. In the Date/time area, click Change for Current system time.

    The Set Current Time dialog displays.

  4. Enter the current date and time and click Setto apply your changes immediately.

To configure the system time using NTP

To accurately log the time for system events, you can synchronize the appliance with one or more NTP servers. You can specify NTP servers by host name or IP address. The appliance uses NTP authentication keys, making it impossible for someone to spoof an NTP server and update the appliance with incorrect time settings. We recommend that you synchronize only with NTP servers on your internal network.

  1. In the AMC, navigate to System Configuration > Services.

  2. In the Network Services section, click the Configure link under NTP.

    The NTP Settings page displays.

  3. To enable NTP, select the Enable NTP checkbox.

  4. Under the NTP Servers, click on + icon.

  5. In the Host field, enter the URL or IP address of NTP server which you want to synchronize your appliance.
  6. Click Prefer this server checkbox to set the NTP server as preferred server and responses from this server will have high priority. In addition, selecting this option will unselect all other NTP servers and responses from the servers will have less priority. Only one host can be marked as preferred server.

    When you are upgrading from prior version of SMA to 12.4, the server which you have configured as primary server is set as the preferred server by default.

  7. Optionally, click Use NTP authentication checkbox if you want to configure authentication for each server. Authenticated NTP is a standard feature of NTP protocol that allows basic validation of the identity of an NTP server using a shared key. This option prevents the user from modifying the timestamps.

    Contact your system administrator for the authentication ID and Key. In the current release, only SHA1 hash algorithm is supported and MD5 is not supported.

  8. Click OK.
  9. Click Save.

You can add up to four NTP servers by clicking on + icon.

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