Secure Network Communication

Besides building secure gateways between the open Internet and the corporate intranet using the described approaches, the data transmitted over the web must be protected from corruption and eavesdropping. The protection of network connections includes three levels of security:

  • Authentication—identifies the communication partner,

  • Integrity—recognizes changes made to data while it was transmitted, and

  • Confidentiality—encrypts data to prevent read without authorization.

Encryption is mandatory for connections across open networks like the Internet. However, it may also be necessary to use encryption in internal networks for authenticating users and protection. This section describes the ways to make communication connections ...

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