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Guide to the Secure Configuration of Red Hat Enterprise Linux 8

Rules, Groups, and Values defined within the XCCDF Benchmark

  • Configure dnf-automatic to Install Only Security Updates

    To configure <code>dnf-automatic</code> to install only security updates automatically, set <code>upgrade_type</code> to <code>security</code> under <code>[commands]</code> section in <code>/etc/dn...
    Rule Low Severity
    Show

  • Ensure gpgcheck Enabled for Local Packages

    <code>yum</code> should be configured to verify the signature(s) of local packages prior to installation. To configure <code>yum</code> to verify signatures of local packages, set the <code>localpk...
    Rule High Severity
    Show

  • Ensure gpgcheck Enabled for All yum Package Repositories

    To ensure signature checking is not disabled for any repos, remove any lines from files in /etc/yum.repos.d of the form: 
    gpgcheck=0
    Rule High Severity
    Show

  • Ensure gpgcheck Enabled for Repository Metadata

    Verify the operating system prevents the installation of patches, service packs, device drivers, or operating system components of local packages without verification of the repository metadata. Ch...
    Rule High Severity
    Show

  • Ensure Software Patches Installed

    If the system is joined to the Red Hat Network, a Red Hat Satellite Server, or a yum server, run the following command to install updates: <pre>$ sudo yum update</pre> If the system is not configu...
    Rule Medium Severity
    Show

  • Enable dnf-automatic Timer

    The dnf-automatic timer can be enabled with the following command: 
    $ sudo systemctl enable dnf-automatic.timer
    Rule Medium Severity
    Show

  • Account and Access Control

    In traditional Unix security, if an attacker gains shell access to a certain login account, they can perform any action or access any file to which that account has access. Therefore, making it mor...
    Group
    Show

  • Authselect profile

    Specify the authselect profile to select
    Value
    Show

  • Enable authselect

    Configure user authentication setup to use the <code>authselect</code> tool. If authselect profile is selected, the rule will enable the <xccdf-1.2:sub idref="xccdf_org.ssgproject.content_value_var...
    Rule Medium Severity
    Show

  • Warning Banners for System Accesses

    Each system should expose as little information about itself as possible. <br> <br> System banners, which are typically displayed just before a login prompt, give out information about the s...
    Group
    Show

  • Login Banner Verbiage

    Enter an appropriate login banner for your organization. Please note that new lines must be expressed by the '\n' character and special characters like parentheses and quotation marks must be escap...
    Value
    Show

  • MotD Banner Verbiage

    Enter an appropriate login banner for your organization. Please note that new lines must be expressed by the '\n' character and special characters like parentheses and quotation marks must be escap...
    Value
    Show

  • Modify the System Login Banner for Remote Connections

    To configure the system login banner edit <code>/etc/issue.net</code>. Replace the default text with a message compliant with the local site policy or a legal disclaimer. The DoD required text is ...
    Rule Medium Severity
    Show

  • Modify the System Message of the Day Banner

    To configure the system message banner edit <code>/etc/motd</code>. Replace the default text with a message compliant with the local site policy or a legal disclaimer. The DoD required text is eit...
    Rule Medium Severity
    Show

  • Verify Group Ownership of System Login Banner

    To properly set the group owner of /etc/issue, run the command: 
    $ sudo chgrp root /etc/issue
    Rule Medium Severity
    Show

  • Verify Group Ownership of System Login Banner for Remote Connections

    To properly set the group owner of /etc/issue.net, run the command: 
    $ sudo chgrp root /etc/issue.net
    Rule Medium Severity
    Show

  • Verify Group Ownership of Message of the Day Banner

    To properly set the group owner of /etc/motd, run the command: 
    $ sudo chgrp root /etc/motd
    Rule Medium Severity
    Show

  • Verify ownership of Message of the Day Banner

    To properly set the owner of /etc/motd, run the command: 
    $ sudo chown root /etc/motd
    Rule Medium Severity
    Show

  • Verify permissions on System Login Banner

    To properly set the permissions of /etc/issue, run the command: 
    $ sudo chmod 0644 /etc/issue
    Rule Medium Severity
    Show

  • Verify permissions on System Login Banner for Remote Connections

    To properly set the permissions of /etc/issue.net, run the command: 
    $ sudo chmod 0644 /etc/issue.net
    Rule Medium Severity
    Show

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