Summary

In this chapter we discussed the client/server model and how UNIX is important in this model. We described the more important functions of clients and servers, including print and file serving. We introduced the Network File System (NFS) as part of the Distributed File System (DFS), and we described how these work in the file sharing environment under UNIX. We described the security issues that exist in a file sharing environment, and the features available under UNIX to ensure secure file access. We also discussed some of the UNIX operating system environments that are used as clients or servers in client/server networks, including the concept of a web client and a web server. We will further explore some of these issues in the next chapter.