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Microsoft® Visual J#™ .NET (Core Reference) by John/Longshaw, Andy Sharp

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Security over the Internet

Security in distributed applications is always an issue, and even more so with applications that use the Internet. We’ll cover two important aspects of security in this section. The first aspect concerns restricting access to resources and applications running on the Web server to certain applications and individuals. You need a way to identify the source of any requests (authentication) and check that the source is allowed to perform any requested action (authorization)—you don’t want any old hacker to upload files onto your Web server or download sensitive data.

The second aspect concerns securing the data as it flows over the Internet. You never know who is listening and monitoring the packets flowing over the network. ...

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