[isf-wifidog] multiple connection

[coli82 at libero.it]

Hi,
I have a problem.
I explane my situation...An user "test" is connected to my wifidog. If another user try to connect as "test" the system validate it and get him internet access...
But I don't want this.
I want that the system does not permit the second "test" user to have internet access and eventually display an error message.
I have already unchecked the "allow multiple connections" by web, but it does not perform this task.

How can I do it?Is there some php configuration to watch?
What can I do?

Thanks a lot

Mark