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The system clock must be synchronized to an authoritative DoD time source.
Overview
| Finding ID | Version | Rule ID | IA Controls | Severity |
|---|---|---|---|---|
| V-219563 | OL6-00-000248 | SV-219563r793820_rule | Medium |
| Description |
|---|
| Synchronizing with an NTP server makes it possible to collate system logs from multiple sources or correlate computer events with real time events. Using a trusted NTP server provided by your organization is recommended. |
| STIG | Date |
|---|---|
| Oracle Linux 6 Security Technical Implementation Guide | 2021-12-03 |
Details
| Check Text ( C-21288r358229_chk ) |
|---|
| A remote NTP server should be configured for time synchronization. To verify one is configured, open the following file. /etc/ntp.conf In the file, there should be a section similar to the following: # --- OUR TIMESERVERS ----- server [ntpserver] If this is not the case, this is a finding. |
| Fix Text (F-21287r358230_fix) |
|---|
| To specify a remote NTP server for time synchronization, edit the file "/etc/ntp.conf". Add or correct the following lines, substituting the IP or hostname of a remote NTP server for ntpserver. server [ntpserver] This instructs the NTP software to contact that remote server to obtain time data. |