TAILIEUCHUNG - Networking: A Beginner’s Guide Fifth Edition- P29

Networking: A Beginner’s Guide Fifth Edition- P29:I have run into many people over the years who have gained good even impressive working knowledge of PCs, operating systems, applications, and common problems and solutions. Many of these people are wizards with desktop computers. | 122 Networking A Beginner s Guide In the preceding chapters you learned about networking systems together through a local area network LAN and through a wide area network WAN and about the technologies that go into both types of networks. You also need to know about another important type of network connection remote access to a network. With today s travel-happy corporate cultures and with companies needing to support such things as working from home and small remote offices remote access has become more important than ever. Unfortunately it s also one of the most difficult parts of a network to get right as you will see in this chapter. One of the big problems with remote access is that it can seem as though all the remote users have different requirements the various solutions address different needs and none of those solutions takes care of all the needs. Finding solid solutions that meet those needs is usually nontrivial and requires a fair amount of time and effort. This chapter describes how you might analyze your company s needs and then discusses the remote access technologies that can provide a solution or solutions for your network. Determining Remote Access Needs Every company has a different mix of remote users and their specific needs may vary from company to company. Moreover even when needs are identical the solutions you employ might change based on other criteria. For instance you might handle access to an accounting system from a remote location differently depending on whether it s a client server or a monolithic application. Understanding Application Implications for Remote Access Client server applications consist of processes programs that run on both the server side and the client side and work in concert. For example a database server performs queries for the client and then transmits to the client only the results of that query. The client s job is just to display the results and maybe format them for printing. A monolithic application on

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