STIGQter: STIG Summary: Microsoft IIS 10.0 Site Security Technical Implementation Guide Version: 2 Release: 16 Benchmark Date: 01 Jul 2026:

Each IIS 10.0 website must be assigned a default host header.

DISA Rule

SV-218748r1210384_rule

Vulnerability Number

V-218748

Group Title

SRG-APP-000142-WSR-000089

Rule Version

IIST-SI-000219

Severity

CAT II

CCI(s)

• CCI-000382 - Configure the system to prohibit or restrict the use of organization-defined prohibited or restricted functions, system ports, protocols, software, and/or services.

Weight

10

Fix Recommendation

Note: If the server being reviewed is hosting SharePoint, 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.

Right-click on the site name under review.

Select "Edit Bindings".

Assign hostname entries and unique IP addresses to port 80 for HTTP and port 443 for HTTPS. Other approved and documented ports may be used.

Click "OK".

Select "Apply" from the "Actions" pane.

Check Contents

Note: If any of the following is true, this requirement is Not Applicable:
- The server being reviewed is hosting SharePoint.
- The server being reviewed is hosting WSUS.
- This IIS 10.0 installation is supporting Microsoft Exchange and not otherwise hosting any content.

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

Open the IIS 10.0 Manager.

Right-click on the site name under review.

Select "Edit Bindings".

Verify there are hostname entries and unique IP addresses assigned to port 80 for HTTP and port 443 for HTTPS. Other approved and documented ports may be used.

If both hostname entries and unique IP addresses are not configured to port 80 for HTTP and port 443 for HTTPS (or other approved and documented port), this is a finding.

Note: If certificate handling is performed at the Proxy/Load Balancer, this is not a finding.

Note: If HTTP/Port 80 is not being used, and is not configured as above, this is not a finding.

Vulnerability Number

V-218748

Documentable

False

Rule Version

IIST-SI-000219

Severity Override Guidance

Note: If any of the following is true, this requirement is Not Applicable:
- The server being reviewed is hosting SharePoint.
- The server being reviewed is hosting WSUS.
- This IIS 10.0 installation is supporting Microsoft Exchange and not otherwise hosting any content.

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

Open the IIS 10.0 Manager.

Right-click on the site name under review.

Select "Edit Bindings".

Verify there are hostname entries and unique IP addresses assigned to port 80 for HTTP and port 443 for HTTPS. Other approved and documented ports may be used.

If both hostname entries and unique IP addresses are not configured to port 80 for HTTP and port 443 for HTTPS (or other approved and documented port), this is a finding.

Note: If certificate handling is performed at the Proxy/Load Balancer, this is not a finding.

Note: If HTTP/Port 80 is not being used, and is not configured as above, this is not a finding.

Check Content Reference

M

Target Key

4051