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A public IIS 10.0 website must only accept Secure Socket Layer (SSL) connections when authentication is required.


Overview

Finding ID Version Rule ID IA Controls Severity
V-218738 IIST-SI-000204 SV-218738r558649_rule Medium
Description
Transport Layer Security (TLS) encryption is a required security setting for a private web server. Encryption of private information is essential to ensuring data confidentiality. If private information is not encrypted, it can be intercepted and easily read by an unauthorized party. A private web server must use a FIPS 140-2-approved TLS version, and all non-FIPS-approved SSL versions must be disabled. NIST SP 800-52 specifies the preferred configurations for government systems.
STIG Date
Microsoft IIS 10.0 Site Security Technical Implementation Guide 2022-06-23

Details

Check Text ( C-20211r505265_chk )
Note: If the server being reviewed is a private IIS 10.0 web server, this is Not Applicable.

Follow the procedures below for each site hosted on the IIS 10.0 web server:

Open the IIS 10.0 Manager.

Click the site name.

Double-click the "SSL Settings" icon.

Verify "Require SSL" check box is selected.

If the "Require SSL" check box is not selected, this is a finding.
Fix Text (F-20209r505266_fix)
Note: If the server being reviewed is a private IIS 10.0 web server, this is Not Applicable.

Follow the procedures below for each site hosted on the IIS 10.0 web server:

Open the IIS 10.0 Manager.

Click the site name.

Double-click the "SSL Settings" icon.

Select "Require SSL" check box.

Select "Apply" from the "Actions" pane.