PLANET MH-1000 - Manual (Page 20)

Multi-Homing Security Gateway User’s Manual
2.6 Virtual Private Networking
A Virtual Private Network (VPN) enables you to send data between two computers across a shared or
public network in a manner that emulates the properties of a point-to-point private link. As such, it is perfect
for connecting branch offices to headquarters across the Internet in a secure fashion.
The following section discusses Virtual Private Networking with MH-1000.
2.6.1 General VPN Setup
There are typically three different VPN scenarios. The first is a Gateway to Gateway setup, where two
remote gateways communicate over the Internet via a secure tunnel.
The next type of VPN setup is the Gateway to Multiple Gateway setup, where one gateway
(Headquarters) is communicating with multiple gateways (Branch Offices) over the Internet. As with all
VPNs, data is kept secure with secure tunnels.
The final type of VPN setup is the Client to Gateway. A good example of where this can be applied is
when a remote sales person accesses the corporate network over a secure VPN tunnel.
100.100.100. myID.dyndns.org
192.168.2.x
Secure Tunnel
VPN Client
100.100.100.1
200.200.200.1
192.168.2.x
192.168.3.x
Secure Tunnel
201.201.201.1
192.168.4.x
Secure Tunnel
192.168.2.x
192.168.3.x
Secure Tunnel
100.100.100.1 200.200.200.1
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