Hello,
Can you clarify what you mean by this… “We need a landing page and guest portal for users who do not use our own productive SSID”?
Also, redirecting users to a landing page on a NAC where the user presses a button and gets redirected to an external webserver is not common and does not sound applicable to a user registering through NAC. I'm not sure this is something we could easily configure other than just editing the portal configuration and placing an HTTP weblink in the Landing age…is that what you are asking for? What is the NAC-related reason to do this?
There may be some wireless knowledge-base articles on configuring the wireless controller for web redirect, but this is not configured on the NAC.
https://gtacknowledge.extremenetworks.com/
I can check with the GTAC’s wireless group on that as well.
Troubleshooting-wise, it may be best to contact the GTAC since the error you are seeing could be due to a number of reasons.
Scott Keene
Extreme GTAC