How does ISPconfig manage the right from users to allow or disallow ftp access? I was looking for .ftpacces files but I could not find one. There is /etc/proftpd_ispconfig.conf and /root/ispconfig/isp/conf/proftpd_ispconfig.conf.master but I don't understand the concep. There is only one virtual host for proftp. But where is defined which user is allowed to habe acces to ftp? FTP users are system users ok. Does ftp ask pam? how it is working?