以Ｎｏｖｅｌｌ局域网为背景探讨了网络数据安全通信的问题，提出了两种软件实现安全通信的模型，它能达到较快的加密、解密速度，又可以方便地进行密钥管理，并能在网络中的工作站之间、工作站和服务器之间做到对等安全通信。 In the background of Novell LAN, the problem of secure data communication is discussed. Two models of secure communication are proposed, which can achieve faster encryption and decryption speed, manage the key easily and work in the network Workstations, workstations and servers to achieve peer-to-peer secure communications.