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DISA STIG with GUI for Red Hat Enterprise Linux 8

Rules and Groups employed by this XCCDF Profile

  • Enable the File Access Policy Service

    The File Access Policy service should be enabled. The fapolicyd service can be enabled with the following command: 
    $ sudo systemctl enable fapolicyd.service
    Rule Medium Severity
    Show

  • Configure Fapolicy Module to Employ a Deny-all, Permit-by-exception Policy to Allow the Execution of Authorized Software Programs.

    The Fapolicy module must be configured to employ a deny-all, permit-by-exception policy to allow the execution of authorized software programs and to prevent unauthorized software from running.
    Rule Medium Severity
    Show

  • FTP Server

    FTP is a common method for allowing remote access to files. Like telnet, the FTP protocol is unencrypted, which means that passwords and other data transmitted during the session can be captured an...
    Group
    Show

  • Disable vsftpd if Possible

    To minimize attack surface, disable vsftpd if at all possible.
    Group
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  • Uninstall vsftpd Package

    The vsftpd package can be removed with the following command: 
     $ sudo yum erase vsftpd
    Rule High Severity
    Show

  • Kerberos

    The Kerberos protocol is used for authentication across non-secure network. Authentication can happen between various types of principals -- users, service, or hosts. Their identity and encryption ...
    Group
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  • Remove the Kerberos Server Package

    The <code>krb5-server</code> package should be removed if not in use. Is this system the Kerberos server? If not, remove the package. The <code>krb5-server</code> package can be removed with the fo...
    Rule Medium Severity
    Show

  • 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 files, especially /etc/krb5.keytab.
    Rule Medium Severity
    Show

  • 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 targets of network attack. Ensure that systems are not r...
    Group
    Show

  • The mailx Package Is Installed

    A mail server is required for sending emails. The mailx package can be installed with the following command: 
    $ sudo yum install mailx
    Rule Medium Severity
    Show

  • The Postfix package is installed

    A mail server is required for sending emails. The postfix package can be installed with the following command: 
    $ sudo yum install postfix
    Rule Medium Severity
    Show

  • 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 following command: <pre> $ sudo yum erase sendmail</pre> ...
    Rule Medium Severity
    Show

  • Configure SMTP For Mail Clients

    This section discusses settings for Postfix in a submission-only e-mail configuration.
    Group
    Show

  • 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 "root". <pre>$ sudo grep "postmaster:\s*root$" /etc/al...
    Rule Medium Severity
    Show

  • 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 some other software.
    Group
    Show

  • 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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  • Control Mail Relaying

    Postfix's mail relay controls are implemented with the help of the smtpd recipient restrictions option, which controls the restrictions placed on the SMTP dialogue once the sender and recipient env...
    Group
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  • Prevent Unrestricted Mail Relaying

    Modify the <pre>/etc/postfix/main.cf</pre> file to restrict client connections to the local network with the following command: <pre>$ sudo postconf -e 'smtpd_client_restrictions = permit_mynetwork...
    Rule Medium Severity
    Show

  • NFS and RPC

    The Network File System is a popular distributed filesystem for the Unix environment, and is very widely deployed. This section discusses the circumstances under which it is possible to disable NF...
    Group
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  • Configure NFS Clients

    The steps in this section are appropriate for systems which operate as NFS clients.
    Group
    Show

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