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Guide to the Secure Configuration of Red Hat Enterprise Linux 7

Rules, Groups, and Values defined within the XCCDF Benchmark

  • 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

  • Kerberos

    The Kerberos protocol is used for authentication across non-secure network. Authentication can happen between various types of principals -- users,...
    Group
    Show

  • 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
    Show

  • 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
    Show

  • Use vsftpd to Provide FTP Service if Necessary

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

  • 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
    Show

  • 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
    Show

  • 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
    Show

  • Uninstall httpd Package

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

  • Disable httpd Service

    The httpd service can be disabled with the following command: 
    $ sudo systemctl mask --now httpd.service
    Rule Unknown Severity
    Show

  • 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
    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
    Show

  • 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
    Show

  • 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
    Show

  • HTTPD Log Level

    The setting for LogLevel in /etc/httpd/conf/httpd.conf
    Value
    Show

  • Maximum KeepAlive Requests for HTTPD

    The setting for MaxKeepAliveRequests in httpd.conf
    Value
    Show

  • Disable netfs if Possible

    To determine if any network filesystems handled by netfs are currently mounted on the system execute the following command: <pre>$ mount -t nfs,nfs...
    Group
    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

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