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Altering the Android captive portal web page – en|

Altering the Android captive portal web page – en|

2023-07-24 07:07:00

In case you don’t need your Android telephone to at all times contact a Google server when switching networks, the next article could be helpful!
It’s fairly simple to modify the captive portal examine URL on an Android telephone. However first…

What’s a captive portal?

Ever been related to a public or resort WiFi? Likelihood is, for those who tried to hook up with it, your telephone notified you that you just needed to “Register to Wi-Fi community” – and that’s what a captive portal is: The web page that needs to be accepted earlier than with the ability to surf on the web. In some instances like in a resort, you may need to log in on that web page too. You’ll be able to learn extra about captive portals on Wikipedia.

However, why ought to I modify it?

Nicely, on Android 6 or greater, each time you turn networks, your telephone tries to entry the next URL:

As we are able to see, – Google’s servers. We’d not need Google to know our new IP tackle or after we switched between networks. So… Why don’t we simply self-host it? It’s fairly simple.

Self-hosting it

To self-host the web page, you simply want an online server and a few capability to return your individual HTTP standing code – we’ll want a “204 No Content material” right here.

Right here’s my PHP script:

header("HTTP/1.0 204 No Content material");

After that, you may change the URL in your telephone.

Altering the URL

To vary the URL, open up a shell/terminal connection to your telephone. You are able to do this with a Terminal emulator (e.g. Termux) or with adb. In my case, I did it with adb and a USB cable.

To begin the adb session, join your telephone to your PC with a USB cable and enter adb shell in your terminal. Settle for the dialog in your telephone.

Allow USB debugging
Make sure that to permit USB debugging in your PC.

It’s best to now be greeted with a shell: PhoneName:/ $
Change the URL with the next instructions:

See Also

settings put world captive_portal_http_url "http://<YOUR-URL>"
settings put world captive_portal_https_url "https://<YOUR-URL>"

Change <YOUR-URL> with your individual hyperlink. Be sure that your net server doesn’t ahead http:// to https:// as a result of that might imply a 301 standing code as a substitute of 204! It’s best to begin seeing entry entries in your net server log as quickly as you reconnect to your wi-fi community.


If you wish to, you may simply use my URLs – logging is disabled right here:

settings put world captive_portal_http_url ""
settings put world captive_portal_https_url ""

That’s it!

You’ve now modified your captive portal hyperlink in your Android machine.
You may wish to change the link in your Firefox browser too.

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