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DISA STIG for Red Hat Enterprise Linux 9

Rules and Groups employed by this XCCDF Profile

  • Uninstall vsftpd Package

    The vsftpd package can be removed with the following command:
     $ sudo dnf erase vsftpd
    Rule High Severity
  • Kerberos

    The Kerberos protocol is used for authentication across non-secure network. Authentication can happen between various types of principals -- users,...
    Group
  • Disable Kerberos by removing host keytab

    Kerberos is not an approved key distribution method for Common Criteria. To prevent using Kerberos by system daemons, remove the Kerberos keytab fi...
    Rule Medium Severity
  • Mail Server Software

    Mail servers are used to send and receive email over the network. Mail is a very common service, and Mail Transfer Agents (MTAs) are obvious target...
    Group
  • Uninstall Sendmail Package

    Sendmail is not the default mail transfer agent and is not installed by default. The <code>sendmail</code> package can be removed with the followin...
    Rule Medium Severity
  • Configure SMTP For Mail Clients

    This section discusses settings for Postfix in a submission-only e-mail configuration.
    Group
  • Configure System to Forward All Mail For The Root Account

    Make sure that mails delivered to root user are forwarded to a monitored email address. Make sure that the address <xccdf-1.2:sub idref="xccdf_org....
    Rule Medium Severity
  • Configure System to Forward All Mail From Postmaster to The Root Account

    Verify the administrators are notified in the event of an audit processing failure. Check that the "/etc/aliases" file has a defined value for "roo...
    Rule Medium Severity
  • Configure Operating System to Protect Mail Server

    The guidance in this section is appropriate for any host which is operating as a site MTA, whether the mail server runs using Sendmail, Postfix, or...
    Group
  • Configure Postfix if Necessary

    Postfix stores its configuration files in the directory /etc/postfix by default. The primary configuration file is /etc/postfix/main.cf.
    Group

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