Portal debug is an advanced debugging feature of the portal page sessions. Once enabled portal debug generates a lot of data, that puts an extra strain on the system. Therefor it's important to only enable it when debugging a guest-related issues. The log shows the verbatim user input and all the variables that are active at the time a guest is logging on.
Tools → Portal debug
enabled when you want to use it in
You will see some logs appear in when someone is trying to connect.
Upon clicking a log entry, the following screen appears.