NcFTPd domain.cf file configuration
Don't forget to restart NcFTPd after modifying the domain.cf file.
Using this option you can configure how many remote FTP clients per the same username are allowed simultaneously for the current domain. This can be useful to set if you find that non-anonymous users are opening up dozens of connections and monopolozing the server for themselves, or sharing their login name with others.
Note that some clients always try opening two or more connections and may cease to work if they can't do that.