Fortinet Document Library

Version:

Version:

Version:


Table of Contents

Download PDF
Copy Link

Drift adjustment

If a user experiences clock drift, it may be the result of incorrect device time settings. If so, make sure that the mobile device clock is accurate by confirming the network time and correct timezone.

If the device clock is set correctly, the issue may be the result of the FortiAuthenticator unit and FortiTokens being initialized prior to setting an NTP server -- this will result in a time difference that is too large to correct with the synchronize function. To avoid this, selected tokens can be manually drift adjusted.

The following procedure is intended to be used only in special cases where some FortiTokens are severely out-of-sync, for example, when a token is switched from manual configuration to NTP control. Under normal circumstances, this is not required.
Only activated FortiTokens can be adjusted.
To perform time drift adjustment on a FortiToken:
  1. In a browser, go to:
    https://<FortiAuthenticator-IP-Address>/admin/fortitoken/fortitokendrift/
  1. Select the FortiToken to adjust and select Adjust Drift.
  1. Enter the required Time adjustment in minutes.
    Include a minus sign (-) for a negative value, but don't use a plus sign (+) for a positive value.
  1. Select OK to adjust the token drift by the specified time.

Drift adjustment

If a user experiences clock drift, it may be the result of incorrect device time settings. If so, make sure that the mobile device clock is accurate by confirming the network time and correct timezone.

If the device clock is set correctly, the issue may be the result of the FortiAuthenticator unit and FortiTokens being initialized prior to setting an NTP server -- this will result in a time difference that is too large to correct with the synchronize function. To avoid this, selected tokens can be manually drift adjusted.

The following procedure is intended to be used only in special cases where some FortiTokens are severely out-of-sync, for example, when a token is switched from manual configuration to NTP control. Under normal circumstances, this is not required.
Only activated FortiTokens can be adjusted.
To perform time drift adjustment on a FortiToken:
  1. In a browser, go to:
    https://<FortiAuthenticator-IP-Address>/admin/fortitoken/fortitokendrift/
  1. Select the FortiToken to adjust and select Adjust Drift.
  1. Enter the required Time adjustment in minutes.
    Include a minus sign (-) for a negative value, but don't use a plus sign (+) for a positive value.
  1. Select OK to adjust the token drift by the specified time.