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Red Hat Enterprise Linux 9 Security Technical Implementation Guide

Rules, Groups, and Values defined within the XCCDF Benchmark

  • RHEL 9 must disable the chrony daemon from acting as a server.

    <VulnDiscussion>Minimizing the exposure of the server functionality of the chrony daemon diminishes the attack surface. Satisfies: SRG-OS-00...
    Rule Low Severity
  • SRG-OS-000096-GPOS-00050

    <GroupDescription></GroupDescription>
    Group
  • RHEL 9 must disable network management of the chrony daemon.

    &lt;VulnDiscussion&gt;Not exposing the management interface of the chrony daemon on the network diminishes the attack space. Satisfies: SRG-OS-000...
    Rule Low Severity
  • SRG-OS-000480-GPOS-00227

    <GroupDescription></GroupDescription>
    Group
  • RHEL 9 systems using Domain Name Servers (DNS) resolution must have at least two name servers configured.

    &lt;VulnDiscussion&gt;To provide availability for name resolution services, multiple redundant name servers are mandated. A failure in name resolut...
    Rule Medium Severity
  • SRG-OS-000480-GPOS-00227

    <GroupDescription></GroupDescription>
    Group
  • RHEL 9 must configure a DNS processing mode in Network Manager.

    &lt;VulnDiscussion&gt;In order to ensure that DNS resolver settings are respected, a DNS mode in Network Manager must be configured.&lt;/VulnDiscus...
    Rule Medium Severity
  • SRG-OS-000480-GPOS-00227

    <GroupDescription></GroupDescription>
    Group
  • RHEL 9 must forward mail from postmaster to the root account using a postfix alias.

    &lt;VulnDiscussion&gt;It is critical for the appropriate personnel to be aware if a system is at risk of failing to process audit logs as required....
    Rule Medium Severity
  • SRG-OS-000480-GPOS-00227

    <GroupDescription></GroupDescription>
    Group

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