au-8(2)

time stamps | secondary authoritative time source

assessment objective:

Determine if the information system identifies a secondary authoritative time source that is located in a different geographic region than the primary authoritative time source.

potential assessment methods and objects:

Examine: [select from: Audit and accountability policy; procedures addressing time stamp generation; information system design documentation; information system configuration settings and associated documentation; information system audit records; other relevant documents or records].

Interview: [select from: Organizational personnel with information security responsibilities; system/network administrators; system developers].

Test: [select from: Automated mechanisms implementing internal information system clock authoritative time sources].