TLDR; Force a captive portal to appear be going to a any HTTP not HTTPS website like http://canireachthe.net OS’s use HTTP probes to check Internet connectivity (this could break from time to time) Consider using DHCP Option 114 for better Captive Portal redirection, read me at #Advanced Captive Portal Detection Captive Portal Detection Different Operating Systems and some Applications have similar but distinct methods to detect if a network is using a Splash page or Captive Portal....