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Guide to the Secure Configuration of Red Hat Enterprise Linux 8

Rules, Groups, and Values defined within the XCCDF Benchmark

  • Enable Logging of All FTP Transactions

    Add or correct the following configuration options within the <code>vsftpd</code> configuration file, located at <code>/etc/vsftpd/vsftpd.conf</cod...
    Rule Unknown Severity
  • Create Warning Banners for All FTP Users

    Edit the vsftpd configuration file, which resides at <code>/etc/vsftpd/vsftpd.conf</code> by default. Add or correct the following configuration ...
    Rule Medium Severity
  • Restrict the Set of Users Allowed to Access FTP

    This section describes how to disable non-anonymous (password-based) FTP logins, or, if it is not possible to do this entirely due to legacy applic...
    Group
  • Limit Users Allowed FTP Access if Necessary

    If there is a mission-critical reason for users to access their accounts via the insecure FTP protocol, limit the set of users who are allowed this...
    Rule Unknown Severity
  • Restrict Access to Anonymous Users if Possible

    Is there a mission-critical reason for users to transfer files to/from their own accounts using FTP, rather than using a secure protocol like SCP/S...
    Rule Medium Severity
  • Use vsftpd to Provide FTP Service if Necessary

    If your use-case requires FTP service, install and set-up vsftpd to provide it.
    Group
  • Install vsftpd Package

    If this system must operate as an FTP server, install the <code>vsftpd</code> package via the standard channels. The <code>vsftpd</code> package ca...
    Rule Low Severity
  • Web Server

    The web server is responsible for providing access to content via the HTTP protocol. Web servers represent a significant security risk because: <br...
    Group
  • Disable Apache if Possible

    If Apache was installed and activated, but the system does not need to act as a web server, then it should be disabled and removed from the system.
    Group
  • Uninstall httpd Package

    The httpd package can be removed with the following command:
    $ sudo yum erase httpd
    Rule Unknown Severity
  • Disable httpd Service

    The httpd service can be disabled with the following command:
    $ sudo systemctl mask --now httpd.service
    Rule Unknown Severity
  • Disable NGINX if Possible

    If NGINX was installed and activated, but the system does not need to act as a web server, then it should be removed from the system.
    Group
  • Uninstall nginx Package

    The nginx package can be removed with the following command:
    $ sudo yum erase nginx
    Rule Unknown Severity
  • Install Apache if Necessary

    If <code>httpd</code> was not installed and activated, but the system needs to act as a web server, then it should be installed on the system. Foll...
    Group
  • Confirm Minimal Built-in Modules Installed

    The default <code>httpd</code> installation minimizes the number of modules that are compiled directly into the binary (<code>core prefork http_cor...
    Group
  • Secure Apache Configuration

    The <code>httpd</code> configuration file is <code>/etc/httpd/conf/httpd.conf</code>. Apply the recommendations in the remainder of this section to...
    Group
  • Configure Samba if Necessary

    All settings for the Samba daemon can be found in <code>/etc/samba/smb.conf</code>. Settings are divided between a <code>[global]</code> configurat...
    Group
  • Configure Error Log Format

    <code>LogFormat</code> should be enabled and set to the following in <code>/etc/httpd/conf/httpd.conf</code>: <pre>LogFormat "a %A %h %H %l %m %s %...
    Rule Medium Severity
  • Configure The Number of Allowed Simultaneous Requests

    The <code>MaxKeepAliveRequests</code> directive should be set and configured to <xccdf-1.2:sub idref="xccdf_org.ssgproject.content_value_var_max_ke...
    Rule Medium Severity
  • MIME types for csh or sh shell programs must be disabled

    Users must not be allowed to access the shell programs.
    Rule Medium Severity

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