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Virtual Private Networks
Just as hosts on MAN’s and WAN’s
can be selectively combined into VLAN’s, it is also possible to
merge a collection of hosts on a public network into a
Virtual Private Network (VPN).
Virtual Private Networks are
becoming more and more popular as users seek to combine the financial
efficiencies of public networks such as the Internet,
with the access controls and security provided by private
networks. Data on a VPN typically travels over the public telecommunications
infrastructure, and is encrypted so that only users with authority to
participate in the VPN can access it. Additionally, it is usually the
case that unauthorized users can’t even see the resources available
on the VPN. We’ll revisit the topic of VPN’s in more detail
when we discuss network security.
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CertiGuide for Network+ (http://www.CertiGuide.com/netplus/) on CertiGuide.com
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