The application pools rapid fail protection settings for each IIS 10.0 website must be managed.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-100277	IIST-SI-000259	SV-109381r1_rule		Medium

Description
Windows Process Activation Service (WAS) manages application pool configuration and may flag a worker process as unhealthy and shut it down. The rapid fail protection must be set to a suitable value. A lack of response from the worker process might mean the worker process does not have a thread to respond to the ping request, or that it is hanging for some other reason. The ping interval and ping response time may need adjustment to gain access to timely information about application pool health without triggering false, unhealthy conditions.

Description

Windows Process Activation Service (WAS) manages application pool configuration and may flag a worker process as unhealthy and shut it down. The rapid fail protection must be set to a suitable value. A lack of response from the worker process might mean the worker process does not have a thread to respond to the ping request, or that it is hanging for some other reason. The ping interval and ping response time may need adjustment to gain access to timely information about application pool health without triggering false, unhealthy conditions.

STIG	Date
Microsoft IIS 10.0 Site Security Technical Implementation Guide	2020-06-08

Details

Check Text ( C-99131r1_chk )
Note: If the IIS Application Pool is hosting Microsoft SharePoint, this is Not Applicable. If this IIS 10.0 installation is supporting Microsoft Exchange, and not otherwise hosting any content, this requirement is Not Applicable. Open the IIS 10.0 Manager. Click "Application Pools". Perform the following for each Application Pool: Highlight an Application Pool to review and click "Advanced Settings" in the "Actions" pane. Scroll down to the "Rapid Fail Protection" section and verify the value for "Failure Interval" is set to "5". If the "Failure Interval" is not set to "5" or less, this is a finding.

Check Text ( C-99131r1_chk )

Note: If the IIS Application Pool is hosting Microsoft SharePoint, this is Not Applicable.

If this IIS 10.0 installation is supporting Microsoft Exchange, and not otherwise hosting any content, this requirement is Not Applicable.

Open the IIS 10.0 Manager.

Click "Application Pools".

Perform the following for each Application Pool:

Highlight an Application Pool to review and click "Advanced Settings" in the "Actions" pane.

Scroll down to the "Rapid Fail Protection" section and verify the value for "Failure Interval" is set to "5".

If the "Failure Interval" is not set to "5" or less, this is a finding.

Fix Text (F-105963r1_fix)
Open the IIS 10.0 Manager. Click "Application Pools". Perform the following for each Application Pool: Highlight an Application Pool to review and click "Advanced Settings" in the "Actions" pane. Scroll down to the "Rapid Fail Protection" section and set the value for "Failure Interval" to "5" or less. Click "OK".