The Netware Core Protocol (NCP) is present in Novell Netware. It is used to access the file and print service functions, and it uses the underlying Internetwork Packet Exchange Layer Services (IPX). More recent Netware versions can also use TCP/IP.
Related Link:
Ethereal (An open source protocol analyzer) Documentation - Fields of the NCP packet. (http://www.ethereal.com/docs/user-guide/sidnetwarecoreprotocol.html)
