We've successfully managed to install our Cisco Nac guest server and a 4402 controller in DMZ. All working apart from RADIUS issues. However when a client connect to the wireless LAN they get certificate errors.
The client tries to go to a web page and are redirected to the following URL which is coming back from the controller: hxxps://1.1.1,1/login.html?redirect=cisco.com/. The browser displays and error "There is a problem with this website's security certificate". The client has to click on "Continue to this website (not recommended)" to continue.
The browser then displays the same certificate error but this time the URL is from our NAC guest server, again clicking on "Continue to this website (not recommended) to continue." solves the issue and the client is redirected to the splash page.
How can I ensure these 2 pages are not presented to the user ?