{"description": "The ntpd service should be installed.", "rationale": "Time synchronization (using NTP) is required by almost all network and administrative tasks (syslog, cryptographic based services (authentication, etc.), etc.). Ntpd is regularly maintained and updated, supporting security features such as RFC 5906.", "severity": "high", "references": {"cis-csc": ["1", "14", "15", "16", "3", "5", "6"], "cobit5": ["APO11.04", "BAI03.05", "DSS05.04", "DSS05.07", "MEA02.01"], "isa-62443-2009": ["4.3.3.3.9", "4.3.3.5.8", "4.3.4.4.7", "4.4.2.1", "4.4.2.2", "4.4.2.4"], "isa-62443-2013": ["SR 2.10", "SR 2.11", "SR 2.12", "SR 2.8", "SR 2.9"], "iso27001-2013": ["A.12.4.1", "A.12.4.2", "A.12.4.3", "A.12.4.4", "A.12.7.1"], "nist": ["CM-6(a)"], "nist-csf": ["PR.PT-1"], "pcidss": ["Req-10.4"]}, "control_references": {}, "components": [], "identifiers": {}, "ocil_clause": "the package is not installed", "ocil": "\n\nRun the following command to determine if the <code>ntp</code> package is installed:\n<pre>$ dpkg -l  ntp</pre>", "oval_external_content": null, "fixtext": "", "checktext": "", "vuldiscussion": "", "srg_requirement": "", "warnings": [], "conflicts": [], "requires": [], "policy_specific_content": {}, "platform": null, "platforms": [], "sce_metadata": {}, "inherited_platforms": ["system_with_kernel"], "cpe_platform_names": [], "inherited_cpe_platform_names": ["system_with_kernel"], "bash_conditional": null, "fixes": {}, "title": "Install the ntp service", "definition_location": "/aptdata/openscap/scap-security-guide/linux_os/guide/services/ntp/package_ntp_installed/rule.yml", "template": {"name": "package_installed", "vars": {"pkgname": "ntp"}, "backends": {}}}