Virtual Private Network

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Virtual Private Networks (VPNs) are capable of providing a secure “tunnel” between systems or applications. VPNs are valuable for providing confidentiality and integrity protection of communications for applications that do not understand or implement those protections–the most obvious being legacy applications, and in particular the protection of ids and passwords transmitted across networks to those applications. Note that, just because an application uses strong authentication ( Public Key or Kerberos ), does not mean the application also provides confidentiality and integrity protection for transmitted information. While strong authentication mechanisms typically…

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