Title

The web server must not be a proxy server. (Cat II impact)

Discussion

A web server should be primarily a web server or a proxy server but not both, for the same reasons that other multi-use servers are not recommended. Scanning for web servers that will also proxy requests into an otherwise protected network is a very common attack making the attack anonymous.

Check Content

Review the web server documentation and deployed configuration to determine if the web server is also a proxy server. If the web server is also acting as a proxy server, this is a finding.

Fix Text

Uninstall any proxy services, modules, and libraries that are used by the web server to act as a proxy server. Verify all configuration changes are made to assure the web server is no longer acting as a proxy server in any manner.

Additional Identifiers

Rule ID: SV-206376r960963_rule

Vulnerability ID: V-206376

Group Title: SRG-APP-000141

Expert Comments

CCIs tied to check.

Controls tied to check. These are derived from the CCIs shown above.