ProFTPD is a powerful modular FTP/SFTP/FTPS server. This File Transfer Protocol daemon supports also hidden directories, virtual hosts, and per-directory ".ftpaccess" files. It uses a single main configuration file, with a syntax similar to Apache.

Because of the advanced design, anonymous-FTP directories can have an arbitrary internal structure (bin, lib, etc, and special files are not needed). Advanced features such as multiple password files and upload/download ratios are also supported.

The proftpd-mod-crypto package carries some proftp modules having to do with crypto technologies. These modules are linked with libsodium, which is not needed by the main binary: - mod_sftp.so - mod_sql_passwd.so - mod_tls.so