Best way to manage a form that can be reached by external users of application

Hi,

I need to open a data entry form to external users. The link is direct to /myapplication/myform/myform.php.
I set under security a password that has to control the direct access but obviously application need also (I suppose) the login parameters in order to have expected grants.
Wich is the best way to manage it ?
Thanks

Make an “external app” (control), ask about the password and link to <myform>.