The program allows you to create several virtual servers that work under the same IP address, and can be run as another Windows service.
Another outstanding aspect of Xlight FTP Server is its user management, since creating users and administering their permissions individually is very easy.
In terms of security, Xlight FTP Server supports SSH encryption, SSL authentication, and IP blocks and also has an email alert system.
Free for non-commercial use. If you use the program for commercial reasons, the trial period is 30 days.