Can't connect to guest wifi on iphone's

[collrbbrt]

Hi guy's I have an issue when iPhones attempt to log into guest Wi-Fi the EUA page flashes and then quickly disappears. it works fine with other devices. Any tips?

[balaji.bandi]

what iOS on iPhone, try different iOS version see if that works, may be the web portal may be not compatible.

try any other browser available in your phone - open the webpage manually and check ?

[collrbbrt]

iOS 17.1.2 I have also tried a different iOS and different browser. still failing to connect. EUP shows up and disappears off screen quickly.   

[Leo Laohoo]

Are you using ISE?

[collrbbrt]

Yes I'm using ISE

[collrbbrt]

[Leo Laohoo]

Go to Administration > Identity Management > Groups.  

Find the repository where all the MAC addresses are stored and manually enter the MAC address of the iPhone.

[collrbbrt]

This is affecting all iPhones in the facility. Also I have several guests
that come around and require connection.

[Leo Laohoo]

If this affects "all iPhones" then it has something to do with the way the EULA is formatted.  

Does this affect iPads?

[collrbbrt]

it is affecting iPhones and iPads. but androids are working fine.

[collrbbrt]

So it seems the EUP portal cert is not trusted by client (Iphones) how would I address this?

[ismiller · Accepted solution]

To resolve the certificate trust issue, typically the best way to handle this is by obtaining a certificate from a globally trusted certificate authority such as DigiCert, Entrust, Symantec, Godaddy etc.  

These issuers are globally trusted across manufacturers and are used to issue certificates for public websites. 

https://www.digicert.com/faq/public-trust-and-certificates/how-do-i-order-a-tls-ssl-certificate#:~:text=All%20of%20our%20products%20can,CSR%20and%20install%20your%20certificate.

You can order a certificate form a provider like this. You'd submit a CSR to the provider and receive a certificate back from them, which you could then bind to ISE and associate the desired portal tag to it. 

[collrbbrt]

Fixing the Cert Issue on ISE helped to fix this issue..