This has been a long and perhaps difficult chapter for some of you. However, it has been presented in the interest of completeness for those of you who need to design local servers where credentials are essential. For example, a local RDBMS database server uses credentials to establish the ID of the user connecting to the database.
Now, you have covered all the material to be learned in this book. But don't close it yet! The next chapter is going to show you how to apply what you know. A working example of a server that uses TCP/IP to obtain stock quotes from the Internet will be presented. After the stock quotes are obtained from the Internet, they will be rebroadcast to your local area network. The penguins are already gathering in the next chapter to see how all those Linux IPOs have been doing lately!