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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 A Valid Server Certificate

    Configure the web site to use a valid organizationally defined certificate. For DoD, this is a DoD server certificate issued by the DoD CA.
    Rule Medium Severity
  • Install mod_ssl

    Install the <code>mod_ssl</code> module: The <code>mod_ssl</code> package can be installed with the following command: <pre> $ sudo yum install mod...
    Rule Unknown Severity
  • Require Client Certificates

    <code>SSLVerifyClient</code> should be set and configured to <code>require</code> by setting the following in <code>/etc/httpd/conf/httpd.conf</cod...
    Rule Medium Severity
  • Restrict Web Server Information Leakage

    The <code>ServerTokens</code> and <code>ServerSignature</code> directives determine how much information the web server discloses about the configu...
    Group
  • Disable Cyrus IMAP

    If the system does not need to operate as an IMAP or POP3 server, the Cyrus IMAP software should be removed.
    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 HTTPD-Served Web Content Securely

    Running <code>httpd</code> inside a <code>chroot</code> jail is designed to isolate the web server process to a small section of the filesystem, li...
    Group
  • Web 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 ...
    Value
  • Configure A Banner Page For Each Website

    Configure a login banner for each website when authentication is required for user access.
    Rule Low Severity
  • Each Web Content Directory Must Contain An index.html File

    Every <code>DocumentRoot</code> that is configured should have an <code>index.html</code> file that exists. Add an <code>index.html</code> file to ...
    Rule Low Severity
  • Disable Web Content Symbolic Links

    For each <code>&lt;Directory&gt;</code> instance, remove the following: <pre>FollowSymLinks</pre> If symbolic links are allowed, the following can ...
    Rule High Severity
  • Encrypt All File Uploads

    Use only secure encrypted logons and connections for uploading files to the web site.
    Rule High Severity
  • Remove .java And .jpp Files

    .java and .jpp files should not exist and should be removed from the web server.
    Rule Low Severity
  • The robots.txt Files Must Not Exist

    Remove any <code>robots.txt</code> files that may exist with any web content. Other methods must be employed if there is information on the web sit...
    Rule Medium Severity
  • Uninstall cyrus-imapd Package

    The cyrus-imapd package can be removed with the following command:
    $ sudo yum erase cyrus-imapd
    Rule Unknown Severity
  • Ensure Web Content Located on Separate partition

    The <code>DocumentRoot</code> directory is used for storing web content and data. Ensure that the <code>DocumentRoot</code> directory exists on a s...
    Rule Medium Severity
  • Use Denial-of-Service Protection Modules

    Denial-of-service attacks are difficult to detect and prevent while maintaining acceptable access to authorized users. However, some traffic-shapin...
    Group
  • IMAP and POP3 Server

    Dovecot provides IMAP and POP3 services. It is not installed by default. The project page at <a href="http://www.dovecot.org">http://www.dovec...
    Group
  • Configure Dovecot if Necessary

    If the system will operate as an IMAP or POP3 server, the dovecot software should be configured securely by following the recommendations below.
    Group
  • Allow IMAP Clients to Access the Server

    The default iptables configuration does not allow inbound access to any services. This modification will allow remote hosts to initiate connection...
    Group

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