Apple IOS Captive Portal Option 114

Mr_JinX

Hi,

I was looking into an issue with an iPhone getting certificate warnings when using captive portal, Apple seems to have a document named "How to modernize your captive network" https://developer.apple.com/news/?id=q78sq5rv

The document refers to DHCP option 114

Would this be correct under advanced DHCP:
Option:-
Number: 114
Type: text
Value: https://auth.contoso.com:8003/index.php?zone=contoso_captive_portal

Gertjan

@mr_jinx

The "value", according https://developer.apple.com/news/?id=q78sq5rv must be a JSON API file.

This file shows an example how the connection phase works.
As you can see, this file doesn't contain a static value.
An non logged in device would retrieve :

  {
      "captive": true,
      "user-portal-url": "https://example.org/portal.html"
   }

After login, the same JSON API file could show :

   {
      "captive": false,
      "user-portal-url": "https://example.org/portal.html",
      "venue-info-url": "https://flight.example.com/entertainment",
      "seconds-remaining": 326,
      "can-extend-session": true
   }

The good new : IPv4 and IPv6 ready.
This will simplify the "get the login page shown to the client" a lot.
'https' isn't an option here : your portal will need valid certificates.
From what I understood, IPv6 is still optional.

I played with this 'DHCP 14' option, and it worked well.
Dono / didn't test any Android devices ....

edit : this is still 'draft' .....