Prevent Closing of Captive Portal on Android after Authentication

Prevent closing of captiver portal after authentication on Android

On the post-authentication rules or firewall, block the following URLs

  • clients4.google.com
  • clients3.google.com
  • clients2.google.com
  • clients1.google.com
  • android.clients.google.com
  • connectivitycheck.android.com
  • connectivitycheck.gstatic.com