UCF STIG Viewer Logo

The IIS 10.0 web server must have a global authorization rule configured to restrict access.


Overview

Finding ID Version Rule ID IA Controls Severity
V-218825 IIST-SV-000159 SV-218825r840138_rule Medium
Description
Authorization rules can be configured at the server, website, folder (including Virtual Directories), or file level. It is recommended that URL Authorization be configured to only grant access to the necessary security principals. Configuring a global Authorization rule that restricts access ensures inheritance of the settings down through the hierarchy of web directories. This will ensure access to current and future content is only granted to the appropriate principals, mitigating risk of unauthorized access.
STIG Date
Microsoft IIS 10.0 Server Security Technical Implementation Guide 2022-06-17

Details

Check Text ( C-20297r840136_chk )
Note: If ASP.NET is not installed, this is Not Applicable.
Note: If the Server is hosting Microsoft SharePoint, this is Not Applicable.
Note: If the server is hosting WSUS, this is Not Applicable.

Open the IIS 10.0 Manager.

Click the IIS 10.0 web server name.

Double-click the ".NET Authorization Rules" icon.

Ensure "All Users" is set to "Allow", and "Anonymous Users" is set to "Deny" otherwise, this is a finding.
If any other rules are present, this is a finding.
Fix Text (F-20295r840137_fix)
Open the IIS 10.0 Manager.

Click the IIS 10.0 web server name.

Double-click the ".NET Authorization Rules" icon.

Alter the list as necessary to ensure "All Users" is set to "Allow", and "Anonymous Users" is set to "Deny".

Remove any other line items.