Users Receive SSL Browser Error When Directed To Network Login

Goto Authentication -> Services -> Scroll down to 'Captive Portal Settings' -> Disable / Uncheck 'Captive Portal Uses HTTPS' -> Apply

This will essentially redirect users to captive Portal on HTTP which may not be recommended.

Ok thanks for that tip. I just had a thought... is it possible to use a custom SSL cert for this that is signed by a known CA, so that HTTPS can still be used without errors?

No - Because with such a possibility, we can stop using HTTPs in the Internet.

If somebody can intercept your HTTPs Connection without letting you know (because you trust this appliance), you could read everything in the internet.

No - Because with such a possibility, we can stop using HTTPs in the Internet.

If somebody can intercept your HTTPs Connection without letting you know (because you trust this appliance), you could read everything in the internet.