A public IIS 8.5 website must only accept Secure Socket Layer connections when authentication is required.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-214447	IISW-SI-000204	SV-214447r539448_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.

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 8.5 Site Security Technical Implementation Guide	2020-09-25

Details

Check Text ( C-15656r539446_chk )
Note: If the server being reviewed is a private IIS 8.5 web server, this is Not Applicable. Note: If the server is hosting WSUS, this is Not Applicable. Follow the procedures below for each site hosted on the IIS 8.5 web server: Open the IIS 8.5 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.

Check Text ( C-15656r539446_chk )

Note: If the server being reviewed is a private IIS 8.5 web server, this is Not Applicable.

Note: If the server is hosting WSUS, this is Not Applicable.

Follow the procedures below for each site hosted on the IIS 8.5 web server:

Open the IIS 8.5 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-15654r539447_fix)
Note: If the server being reviewed is a private IIS 8.5 web server, this is Not Applicable. Note: If the server is hosting WSUS, this is Not Applicable. Follow the procedures below for each site hosted on the IIS 8.5 web server: Open the IIS 8.5 Manager. Click the site name. Double-click the "SSL Settings" icon. Select "Require SSL" check box. Select "Apply" from the "Actions" pane.