I needed to test a ProFTP server to ensure that it could cope with 200 simultaneous users. The relevant lines in /etc/proftpd.conf to control this are:
MaxClientsPerHost 20 "Only %m connections per host allowed"
MaxClients 20 "Only %m total simultaneous logins allowed"
I followed the excellent instructions here for creating a Test Plan for FTP. I wanted to use hundreds of unique users and it is painfully slow adding users… Read more »