The Apache web server must restrict inbound connections from nonsecure zones.

From Apache Server 2.4 UNIX Server Security Technical Implementation Guide

Associated with: CCI-002314

AS24-U1-000670_rule The Apache web server must restrict inbound connections from nonsecure zones.

Vulnerability discussion

Remote access to the Apache web server is any access that communicates through an external, non-organization-controlled network. Remote access can be used to access hosted applications or to perform management functions.A web server can be accessed remotely and must be capable of restricting access from what the DoD defines as nonsecure zones. Nonsecure zones are defined as any IP, subnet, or region that is defined as a threat to the organization. The nonsecure zones must be defined for public web servers logically located in a DMZ, as well as private web servers with perimeter protection devices. By restricting access from nonsecure zones, through the internal web server access list, the Apache web server can stop or slow denial-of-service (DoS) attacks on the web server.

Check content

Determine the location of the "httpd.conf" file by running the following command: httpd -V Review the "HTTPD_ROOT" path. Navigate to the "HTTPD_ROOT"/conf directory. Edit the "httpd.conf" file. If "IP Address Restrictions" are not configured or IP ranges configured to "Allow" are not restrictive enough to prevent connections from nonsecure zones, this is a finding.

Fix text

Configure the "http.conf" file to include restrictions. Example: Require not host phishers.example.com sample.example

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.