Configure connection verification time-out

To configure connection verification time-out

In the console tree of ISA Server Management, click Monitoring.
In the details pane, click the Connectivity tab and select the applicable verifier.
On the Tasks tab, click Edit Selected Verifier.
On the Properties tab, in Specify the timeout response threshold (msec), type the number of milliseconds to wait to determine that the server is not responding.
Select Trigger an alert if the server response is not within the specified timeout, if ISA Server should trigger an alert indicating that the server is not responding.

Notes

To open ISA Server Management, click Start, point to All Programs, point to Microsoft ISA Server, and then click ISA Server Management.
For ISA Server 2006 Enterprise Edition, expand Microsoft Internet Security and Acceleration Server 2006, expand Arrays, expand Array_Name, and then click Monitoring.
For ISA Server 2006 Standard Edition, expand Microsoft Internet Security and Acceleration Server 2006, expand Server_Name, and then click Monitoring.

Get latest ISA Server content at ISA Server Guidance(http://www.microsoft.com/).