The application pools pinging monitor for each IIS 8.5 website must be enabled.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-76877	IISW-SI-000257	SV-91573r1_rule		Medium

Description
Windows Process Activation Service (WAS) manages application pool configurations and may flag a worker process as unhealthy and shut it down. An application pool’s pinging monitor must be enabled to confirm worker processes are functional. 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 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; for example, instability caused by an application.

Description

Windows Process Activation Service (WAS) manages application pool configurations and may flag a worker process as unhealthy and shut it down. An application pool’s pinging monitor must be enabled to confirm worker processes are functional. 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 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; for example, instability caused by an application.

STIG	Date
IIS 8.5 Site Security Technical Implementation Guide	2019-10-01

Details

Check Text ( C-76533r1_chk )
Open the Internet Information Services (IIS) Manager. Click the “Application Pools”. Perform for each Application Pool. Highlight an Application Pool to review and click "Advanced Settings" in the "Actions" pane. Scroll down to the "Process Model" section and verify the value for "Ping Enabled" is set to "True". If the value for "Ping Enabled" is not set to "True", this is a finding.

Fix Text (F-83573r1_fix)
Open the IIS 8.5 Manager. Click the “Application Pools”. Perform for each Application Pool. Highlight an Application Pool to review and click "Advanced Settings" in the "Actions" pane. Scroll down to the "Process Model" section and set the value for "Ping Enabled" to "True". Click “OK”.