A private IIS 10.0 website must only accept Secure Socket Layer (SSL) connections.
Overview
| Finding ID | Version | Rule ID | IA Controls | Severity |
| V-218737 | IIST-SI-000203 | SV-218737r1022671_rule | CCI-000068 | 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 | 2025-06-09 | |||
Details
Check Text (C-218737r1022671_chk)
Note: If the server being reviewed is a public IIS 10.0 web server, this is Not Applicable.
Note: If the server is hosting SharePoint, this is Not Applicable.
Note: If the server is hosting WSUS, this is Not Applicable.
Note: If SSL is installed on load balancer/proxy server through which traffic is routed to the IIS 10.0 server, and the IIS 10.0 server receives traffic from the load balancer/proxy server, the SSL requirement must be met on the load balancer/proxy server and is Not Applicable in this STIG.
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-20208r903108_fix)
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.