I am working on a NetBIOS based communication tool, that will work not only in LAN, but also in WAN (Internet). For LAN we have units, but for accessing shares over the internet I don't have nothing. I know that NetBIOS uses TCP and UDP protocols for communication and ports: 137 udp, 138 udp, 139 ftp. I have some documentation and sources about NetBIOS and FTP protocol, but I don't know the sequence of the commands, or structure of the packages (records). If anyone has worked on this before, I would be wery grateful for any help on this subject.