VPN Fundamentals
Lesson 10: VPN
Leased lines have some wonderful security features. The router on one end knows with confidence the identity of the device on the other end of the link. The receiving router also has good reason to believe that no attackers saw the data in transit, or even changed the data to cause some harm.
VPNs try to provide the same secure features as a leased line while sending data over a network that is open to other parties. In fact, the data often crosses the Internet. Even when sending data over public networks like the Internet, VPNs can provide the following:
Confidentiality (Privacy): Preventing anyone in the middle ...
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