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The web server must not be a proxy server.


Finding ID Version Rule ID IA Controls Severity
V-41694 SRG-APP-000141-WSR-000076 SV-54271r3_rule Medium
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.
Web Server Security Requirements Guide 2019-03-20


Check Text ( C-48091r2_chk )
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 (F-47153r3_fix)
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.