Sun Internet FTP ServerTM is fully compatible with the Solaris 8 FTP software. The FTP Server offers new capabilities and new performance improvements for Solaris 9 users.
The Solaris 9 FTP Server is based on WU-ftpd. Originally developed by Washington University, WU-ftpd is widely used for the distribution of bulk data over the Internet. WU-ftpd is the preferred standard for large FTP sites.