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2.2.1.1 Ensure time synchronization is in use

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Information

System time should be synchronized between all systems in an environment. This is typically done by establishing an authoritative time server or set of servers and having all systems synchronize their clocks to them.

Note:

 - If another method for time synchronization is being used, this section may be skipped.
 - Only one time synchronization package should be installed

Time synchronization is important to support time sensitive security mechanisms like Kerberos and also ensures log files have consistent time records across the enterprise, which aids in forensic investigations.

Solution

Run One of the following commands to install chrony or NTP:

To install chrony, run the following command:

# yum install chrony

OR

To install ntp, run the following command:

# yum install ntp

Note: On systems where host based time synchronization is available consult your virtualization software documentation and setup host based synchronization.

See Also

https://workbench.cisecurity.org/benchmarks/8415

Item Details

References: CSCv7|6.1

Plugin: Unix

Control ID: e6422053d5fe4d73e61ad57aa75d92e91a0630fad8330c8acfe2c371b75b01b7