Digi Wi-Point 3G Application Guide
How to Create a VPN between a Wi-Point 3G and Linksys
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2/20/2009
Digi International
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Scenario
Digi Wi-Point 3G is used for primary internet connectivity at a remote site. The remote
site needs a way to get data to and from an office location.
Theory of Operation
A remote site needs to be able to retrieve and send data to an office location from its
Ethernet and Wi-Fi enabled devices. The way to do this will be to setup a VPN tunnel
between the Wi-Point 3G and the Linksys VPN appliance at the office location, to
provide a secure tunnel to the office location.
Sample Diagram
Internet Cloud
PCs, PLCs, etc.
Servers, PCs, PLCs, etc.
Digi Wi-Point
3G
Linksys VPN Appliance
WAN IP: 5.6.7.8
LAN IP: 192.168.1.1
WAN IP: 1.2.3.4
LAN IP: 10.1.254.1
Carrier Plan and PC / VPN Appliance Requirements
Digi Wi-Point 3G Requirements:
Firmware version 1.1.34-8 or later is installed. To
download the latest firmware, go to
GSM GPRS/EDGE APN Type needed
: VPN and GRE end-points usually require static
(persistent) IP addresses and must support mobile terminated data connections. If mobile
termination is not an option with your current APN, you will need to acquire a new one
that does support mobile termination.
CDMA networks
may also require special plans to provide static IP addresses and
support mobile terminated data connections.
Check with your wireless provider on the available plan types.
