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Guide to the Secure Configuration of Red Hat Enterprise Linux 8

Rules, Groups, and Values defined within the XCCDF Benchmark

  • 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
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  • Uninstall nginx Package

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

  • 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
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  • 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
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  • 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
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  • HTTPD Log Level

    The setting for LogLevel in /etc/httpd/conf/httpd.conf
    Value
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  • Maximum KeepAlive Requests for HTTPD

    The setting for MaxKeepAliveRequests in httpd.conf
    Value
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  • 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
    Show

  • 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
    Show

  • MIME types for csh or sh shell programs must be disabled

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

  • Enable HTTPD Error Logging

    ErrorLog should be enabled and set to the following in /etc/httpd/conf/httpd.conf: 
    ErrorLog "logs/error_log"
    Rule Medium Severity
    Show

  • Enable HTTPD LogLevel

    <code>LogLevel</code> should be enabled and set to <xccdf-1.2:sub idref="xccdf_org.ssgproject.content_value_var_httpd_loglevel" use="legacy"></xccd...
    Rule Medium Severity
    Show

  • Enable HTTPD System Logging

    <code>CustomLog</code> should be enabled and set to the following in <code>/etc/httpd/conf/httpd.conf</code>: <pre>CustomLog "logs/access_log" comb...
    Rule Medium Severity
    Show

  • The web server password(s) must be entrusted to the SA or Web Manager

    Normally, a service account is established for the web server. This is because a privileged account is not desirable and the server is designed to ...
    Rule Medium Severity
    Show

  • A public web server, if hosted on the NIPRNet, must be isolated in an accredited DoD DMZ extension

    To minimize exposure of private assets to unnecesarry risk by attackers, public web servers must be isolated from internal systems. Logically relo...
    Rule Medium Severity
    Show

  • Installation of a compiler on production web server is prohibited

    The presence of a compiler on a production server facilitates the malicious user's task of creating custom versions of programs and installing Troj...
    Rule Medium Severity
    Show

  • A private web server must be located on a separate controlled access subnet

    Private web servers, which host sites that serve controlled access data, must be protected from outside threats in addition to insider threats. Is...
    Rule Medium Severity
    Show

  • Public web server resources must not be shared with private assets

    It is important to segregate public web server resources from private resources located behind the DoD DMZ in order to protect private assets.
    Rule Medium Severity
    Show

  • Backup interactive scripts on the production web server are prohibited

    Copies of backup files will not execute on the server, but they can be read by the anonymous user if special precautions are not taken.
    Rule Medium Severity
    Show

  • Configure Operating System to Protect Web Server

    The following configuration steps should be taken on the system which hosts the web server, in order to provide as safe an environment as possible ...
    Group
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