With BulletProof FTP , you can upgrade from any older version, have virtual directories for UNC Shares, allow customers to upload Files, etc. Other features include : SFTP: FTP over SSH B2B Business to Customer Files FTPS: FTP over TLS/SSL Allow Customers to Upload Files FTP: classic rfc959 Monitor FTP Server Activity and Traffic User-Control with Diskspace Quota Bandwidth Throttling and Traffic Shapping Ad Hoc File Sharing via Private P2P Extensive Stats and Runtime Activity Windows System-Service Support NAT/Firewall with PASV (passive-mdeo) Event Support and Automation Email Notification IP Auto-Banning Connection Throttling User Control with IP/Domain/User Restrictions Supports the Latest Windows Server/Desktop