Some tips for setting up a secure FTP server include enabling logging, disabling anonymous access to the server, enabling disk quotas and restricting access to the server by IP address. These tips apply to FTP server setups across all operating systems, including Windows, Linux and Mac, and help increase server security and performance.
FTP servers can record logs of all users that access the server, as well as the actions that the users take. In case something goes wrong in the future, having these logs may prove extremely helpful in fixing a problem, and FTP logs help administrators ensure that users are accessing the FTP server properly. Disk quotas prevent any one user from quickly filling up a server with files, which overloads the disk space and ruins server performance.
Some FTP servers may allow access from users that don't enter in a user name or password. This can prove dangerous as it prevents administrators from identifying users properly. Likewise, administrators can ensure that only authorized users access a server by preventing anyone except specific authorized IP addresses from accessing the server. Anyone who attempts to log in to the server from an unauthorized IP address, even if they have a proper user name and password, is denied access to the server.