Android Captive Portal Check: 204-HTTP response from captiveportal.kuketz.de

Each time your Android device connects to a WLAN, the system performs a Captive Portal Check. Android wants to ensure that your device has not only received an IP address from the access point, but that it can also actually reach destinations on the Internet.

Android sends a request for verification to the address connectivitycheck.gstatic.com. If the request is successful or answered with the HTTP response code 204, access to the Internet is available. With this request, the system transmits information to Google about the IP address of the connection, the time of Internet access and which browser is currently being used.

If you block this request to Google via AFWall+ or anywhere else on your network, a small cross will appear in the WLAN icon in the Android menu bar. Depending on the Android version, you will also see a message saying that there is no Internet available. Especially data protection-conscious users don't want to send a "ping" to Google every time they go online. There is now a solution for this for all users with root access on their devices.

English translation (full guide):
https://t.me/BlackBox_Archiv/337

Source and more info (german):
https://www.kuketz-blog.de/android-captive-portal-check-204-http-antwort-von-captiveportal-kuketz-de/

#android #captiveportal #check #HTTP #guide #kuketz
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