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Support Captive Potal Detection for Samsung Products

Discussion in 'Android Help' started by ksabo, Jun 10, 2016.

  1. ksabo

    ksabo Lurker
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    Jun 10, 2016
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    Hi all,

    Designing a NAC for work and I am having trouble getting Samsung devices to recognize the user must sign in to a captive portal for network access. I have managed to find the URLs that other products use for captive portal detection (i.e. captive.apple.com for iOS, and most Androids use clients3.google.com/generate_204). In fact, every device I have tested (apple, motorola, older samsungs, lg, nexus) seems to present the user with a pop up stating they need to log in to the WiFi. Newer Samsung devices (confirmed on Galaxy Note S5 and Galaxy S7) are not presenting this pop up. I think Samsung has butchered the Standard that Google created and I am wondering what URL they use for Captive Portal Detection in their newer devices.

    Thanks!
     

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  2. WaltDjr

    WaltDjr Lurker
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    May 26, 2017
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    Did you ever find an answer to this problem? I am having the same issue with my Galaxy S8.
     
  3. David Esteves

    David Esteves Lurker
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    Aug 9, 2017
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    Same problem here

    when the phone connects, it doesn't do any DNS requests at all on any domain.
    It goes directly on the http server hosting the captive portal page, I guess using only the gateway's IP.
    It tries 3 times within 3s to get the /generate_204, then once again 1 min later. After that it stops trying until the user goes in the browser. From there everything works as expected.

    I haven't seen any behavior like this with any other phone
    Any solution is welcome
     

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