
Virtual Private Network Services 185
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Basic Terms and Concepts
Introduction to
Virtual Private
Networks
Virtual Private Networks (VPN) provide an easy, affordable, and secure
means for businesses to conduct operations and provide network
connectivity to all offices and partners. Using 3Com’s intuitive Web
interface, a secure connection may be established between two or more
sites.
Data that is intended for delivery to a remotely connected site is
automatically encrypted using the VPN’s accelerated cryptographic
processor. The data is delivered via the Web and decrypted at the
intended destination.
The SuperStack 3 Firewall VPN implementation uses the IPSec VPN
standard. This guarantees compliance with other VPN products, such as
3Com PathBuilder 400 and Check Point Firewall-1 that adhere to the
same standard.
VPN Applications The following illustration shows the VPN connections between the offices
and users of a simple company. In this example all external connections
are made using VPN tunnels across the Internet.
Figure 65
Virtual Private Networks Applications
Internet
Head Office
Mobile
Home Office
Branch Office
VPN TUNNEL
VPN TUNNEL
VPN TUNNEL
VPN TUNNEL
DUA1611-0AAA02.book Page 185 Thursday, August 2, 2001 4:01 PM
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