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Guide to the Secure Configuration of Red Hat Enterprise Linux 9

Rules, Groups, and Values defined within the XCCDF Benchmark

  • Verify Permissions on group File

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

  • Add nosuid Option to /var

    The <code>nosuid</code> mount option can be used to prevent execution of setuid programs in <code>/var</code>. The SUID and SGID permissions should...
    Rule Medium Severity
    Show

  • Verify Group Who Owns cron.deny

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

  • Verify Owner on cron.deny

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

  • Ensure that /etc/cron.allow exists

    The file /etc/cron.allow should exist and should be used instead of /etc/cron.deny.
    Rule Medium Severity
    Show

  • 389 Directory Server

    389 Directory Server is a popular open-source LDAP server for Linux.
    Group
    Show

  • Uninstall 389-ds-base Package

    The 389-ds-base RPM is not installed by default on a Red Hat Enterprise Linux 9 system. It is needed only by the 389-ds server, not by the clients ...
    Rule Low Severity
    Show

  • The s-nail Package Is Installed

    A mail server is required for sending emails. The <code>s-nail</code> package can be installed with the following command: <pre> $ sudo dnf install...
    Rule Medium Severity
    Show

  • Network Time Protocol

    The Network Time Protocol is used to manage the system clock over a network. Computer clocks are not very accurate, so time will drift unpredictabl...
    Group
    Show

  • SSH Strong MACs by FIPS

    Specify the FIPS approved MACs (Message Authentication Code) algorithms that are used for data integrity protection by the SSH server.
    Value
    Show

  • Enable SSH Server firewalld Firewall Exception

    If the SSH server is in use, inbound connections to SSH's port should be allowed to permit remote access through SSH. In more restrictive firewalld...
    Rule Medium Severity
    Show

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