Disable Captive Network Assistant
Devices that sense captive networks may trigger browsers because network connection is initially restricted.
iOS/macOS/Samsung Android
FortiNAC must not have Captive Network Assistant configured. This feature is disabled by default. If enabled, see section Disable CNA (iOS/macOS/Samsung Android) in the Captive Networks Assistant reference manual.
Note: This function is disabled for all portals for these operating systems.
Windows
By default, it is possible for Windows machines to automatically popup the default browser. Refer to the following article for more information: