VPs Usage Note-selection of FTP servers in Linux

Common FTP servers in Linux include Wu-FTP, vsftpd, proftpd, and pure-ftpd. Wu-FTP has a long history and has many security vulnerabilities. It is not recommended. As a replacement for Wu-FTP, vsftpd, proftpd, and pure-ftpd are three main FTP servers in Linux. Among them, vsftpd is famous for its security and performance, and ProFTPD wins by many features, the performance and features of pure-ftpd are basically not updated. Generally, vsftpd is safe, stable, simple, and universal. If you have special requirements on features, you can select ProFTPd. Pure-ftpd is not applicable on some platforms.
Vsftpd has excellent performance in terms of security, high performance, and stability. The overall performance is also very high:
1. Security
The name of vsftpd stands for "very secure FTP daemon". Its developer Chris Evans is concerned with the security of data transmission, disaster recovery and security are superior to other FTP servers such as wu-ftpd and ProFTPD.
1. Speed
The download speed of data in ASCII mode is twice that of WU-FTPd. In the kernel of the linux2.4 series, the download speed of Gigabit Ethernet can reach 86 Mb/s.
2. Stability
You can connect more than 4000 concurrent users on a single machine (non-cluster). According to data of ftp.redhat.com, it supports 15000 concurrent users.
Vsftpd provides the following functions: virtual IP settings, virtual users, standalone, inetd operation modes, powerful single-user setting capabilities, and bandwidth throttling. Vsftpd is currently in use for some large sites such as red hat, Suse, Debian, GNU, gnome, Kde, gimp, and OpenBSD.