FTP server software

As a result of this, FTP server software often has FXP disabled by default.

WU-FTPD (more fully wuarchive-ftpd, also frequently spelled in lowercase as wu-ftpd) is a free FTP server software (daemon) for Unix-like operating systems.

Up until early 2000s, it was the most common FTP server software in use, though its use has lessened in recent years due to availability of more feature-rich and easier-to-configure software, and primarily due to its perceived lack of security and the perceived complexity of the source code.