Originally forwarded from: "joey.wheel" <joey@cpio.net>
http://www.cisco.com/warp/public/784/packet/july98/4.html
Virtual Private Networks -- Build or Buy?
Scores of network managers are faced with a daunting task: connect a
growing number of geographically dispersed sites to their enterprise
networks while working within a limited budget. To help them accomplish
this task, a new breed of virtual private network (VPN) based on IP
technology has recently emerged. Simply put, a VPN is a network that
provides customer connectivity over a shared, public infrastructure --
such as the Internet -- with the same policies that the customers enjoy in
their own private networks.
VPNs are attractive to networking managers because they provide easy
access to intranets, the in-house communication tools that companies are
using increasingly to run their mission-critical applications. Because
intranets are built on IP-based Web browsers, VPNs based on IP are
required to extend their capabilities transparently, over wide-area links
to remote offices, mobile workers, and telecommuters within a company, or
to suppliers, business partners, and customers outside an organization.
Managers are considering VPNs for other compelling reasons, too: reduced
long-distance phone charges for remote access, lower operational and
capital equipment costs, faster and easier connectivity, and simplified
WAN administration.
[snip...]
-o-
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Received on Tue Jul 28 10:53:20 1998