Bug ID 460715: Changes in captive portal probe URL

Last Modified: Oct 06, 2020

Bug Tracker

Affected Product:  See more info
BIG-IP APM(all modules)

Known Affected Versions:
11.4.1, 11.5.0, 11.5.1, 11.5.1 HF1, 11.5.1 HF10, 11.5.1 HF11, 11.5.1 HF2, 11.5.1 HF3, 11.5.1 HF4, 11.6.0, 11.6.0 HF1, 11.6.0 HF2, 11.6.0 HF3, 11.6.0 HF4

Fixed In:
12.0.0, 11.6.0 HF5, 11.5.1 HF5, 11.4.1 HF6

Opened: May 05, 2014
Severity: 3-Major


The system uses a Microsoft-specific captive portal detection URL (http://www.msftncsi.com/ncsi.txt).


With this bug we are trying trying to change it to F5 captive portal detection URL (http://www.f5.com/apps/all/avail.txt), and at the same time provide an ability for the customers to change behavior through modifying client settings in the registry.


Using APM.



Fix Information

The system now uses an F5 Networks-specific captive portal probe URL in BIG-IP Edge Client for Windows instead of the default Microsoft-specific captive portal detection URL. An administrator for a Windows-based system can override use of the F5 captive portal URL by changing the following registry keys: HKEY_LOCAL_MACHINE\SOFTWARE\F5 Networks\RemoteAccess.[ActiveWebProbeHost| ActiveWebProbePath | ActiveWebProbeContent].

Behavior Change