Pure-ftpd Login Screen

Hi, when I try to acces my ftp server using a web browser, using an url like ftp://myserver.net. IE automatically logs me in as anonymous. You can change that via files: log in, but is there a way to prompt a log in screen? I’m using pure-ftpd for ftping and I couldn’t find anything in the pure-ftpd.conf file. Does anybody know where to change these settings?

Greetsz, Superdude