NetWare Internetwork Packet Exchange/Sequenced Packet Exchange (IPX/SPX)
Its' the Microsoft implementation of the IPX/SPX protocol suite. It is useful in case where we have to use
on Windows 2000 a client/server NetWare application using Winsock or NetBIOS on IPX/SPX.
It isn't necessary to allow a computer Windows 2000 to connect to a NetWare server (in this case we
have to use a redirector).