The Apache web server must prohibit or restrict the use of nonsecure or unnecessary ports, protocols, modules, and/or services.

From Apache Server 2.4 UNIX Server Security Technical Implementation Guide

Associated with: CCI-001762

AS24-U1-000780_rule The Apache web server must prohibit or restrict the use of nonsecure or unnecessary ports, protocols, modules, and/or services.

Vulnerability discussion

Web servers provide numerous processes, features, and functionalities that use TCP/IP ports. Some of these processes may be deemed unnecessary or too unsecure to run on a production system.The Apache web server must provide the capability to disable or deactivate network-related services that are deemed to be non-essential to the server mission, are too unsecure, or are prohibited by the Ports, Protocols, and Services Management (PPSM) Category Assurance List (CAL) and vulnerability assessments.

Check content

Review the website to determine if HTTP and HTTPs are used in accordance with well known ports (e.g., 80 and 443) or those ports and services as registered and approved for use by the DoD PPSM. Any variation in PPS will be documented, registered, and approved by the PPSM. If not, this is a finding.

Fix text

Ensure the website enforces the use of IANA well-known ports for HTTP and HTTPS.

Pro Tips

Lavender hyperlinks in small type off to the right (of CSS class id, if you view the page source) point to globally unique URIs for each document and item. Copy the link location and paste anywhere you need to talk unambiguously about these things.

You can obtain data about documents and items in other formats. Simply provide an HTTP header Accept: text/turtle or Accept: application/rdf+xml.