V-283794

Discussion

Time synchronization of system clocks is essential for the correct execution of many system services, including identification and authentication processes that involve certificates and time-of-day restrictions as part of access control. Denial of service or failure to deny expired credentials may result without properly synchronized clocks within and between systems and system components. Time is commonly expressed in Coordinated Universal Time (UTC), a modern continuation of Greenwich Mean Time (GMT), or local time with an offset from UTC. The granularity of time measurements refers to the degree of synchronization between system clocks and reference clocks, such as clocks synchronizing within hundreds of milliseconds or tens of milliseconds. Organizations may define different time granularities for system components. Time service can be critical to other security capabilities such as access control and identification and authentication depending on the nature of the mechanisms used to support the capabilities.

Check Content

Verify the Nokia router is configured to synchronize system clocks within and between systems or system components.

Verify NTP server is configured:

- show system ntp detail

NTP Status

Configured         : Yes                Stratum              : 3
Admin Status       : up                 Oper Status          : up
Server Enabled     : No                 Server Authenticate  : No
Clock Source       : 10.1.0.158
Auth Check         : Yes
Auth Keychain      :
Auth Errors        : 0                  Auth Errors Ignored  : 0
Auth Key Id Errors : 0                  Auth Key Type Errors : 0
Current Date & Time: 2025/12/02 13:45:31 UTC

If the Nokia router is not configured to synchronize system clocks within and between systems or system components, this is a finding.