Guide to the Secure Configuration of Red Hat Enterprise Linux 8
Rules, Groups, and Values defined within the XCCDF Benchmark
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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><Directory></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
Thecyrus-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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