13 lines
687 B
Markdown
13 lines
687 B
Markdown
---
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layout: service.njk
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key: connectivitycheck
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title: Captive Portal Check
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---
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A captive portal is a login page in public WLAN networks to restrict Internet access to the approval of certain terms of use. When you see a login page on a public network, your device uses a captive portal check. This allows the device to find out whether you have direct Internet access or not. In Android, for example, your device sends a request to a Google server.
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## More useful links
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* [Captive Portal Wikipedia](https://en.wikipedia.org/wiki/Captive_portal)
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* [Source code](https://git.sp-codes.de/samuel-p/connectivity-check)
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* [Docker Image](https://hub.docker.com/r/samuelph/connectivity-check)
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