Virtual Private Networking - SnapGear VPN Router User Manual

Virtual Private Networking enables two or more locations to communicate securely and effectively,
usually across a public network such as the Internet. Three key traits of VPN technology are:
•
Privacy (no one else can see what you are communicating)
•
Authentication (you know who you are communicating with)
•
Integrity (no one else can tamper with your messages/data)
With Virtual Private Networking, you can access the office network securely across the Internet using
PPTP (Point-to-Point Tunneling Protocol) or IPSec. If you take your portable computer on a business trip,
you can dial a local number to connect to your Internet access provider and then create a second
connection, or tunnel, into your office network across the Internet. You will have the same access to your
corporate network as if you were connected directly to it from your office. Similarly, telecommuters can
set up a VPN tunnel over their cable modem or DSL links to their local Internet Service Providers.
With the SnapGear VPN Router you can establish a secure VPN over the Internet using either PPTP or
IPSec. IPSec provides the better security, however, PPTP may be the VPN protocol to use when
integrating with existing Microsoft infrastructure. The SnapGear VPN Router provides a PPTP server to
enable remote Windows clients to securely access your office network. Using the SnapGear VPN Router's
PPTP client or IPSec you can also connect your office network to one or more remote networks. This
chapter explains how to configure the PPTP server and client, as well as IPSec in your SnapGear VPN
Router, and how to set up remote clients to connect to your VPN tunnel.

Virtual Private Networking

7. Virtual Private Networking
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