RadiSys SEG-100 Administration Manual
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Contents
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7Chapter113IPsec VPNOverviewThis section takes a general look at VPNs, what they are, what they can provide, and thetypical scenarios where they are used.VPN usageThe Internet is increasingly used as a means to connect computers together since it offersefficient and inexpensive communication. The requirement is for data to traverse the Internetto its intended recipient without another party being able to read (confidentiality) or alter it(integrity).It is equally important that the recipient can verify that no one is falsifying data or pretendingto be someone else. Virtual Private Networks (VPNs) meet this need, providing a highly costeffective means of establishing secure links between two co‐operating computers so that datacan be exchanged in a secure manner.VPN allows the setting up of a tunnel between two devices known as tunnel endpoints. Alldata flowing through the tunnel is secure. The mechanism that provides tunnel security isencryption. |
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