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Configure the device using the Digi ConnectPort X Family web interface
Configuration through the web interface
Digi ConnectPort X Family
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Reference
. Generally, configuring VPN connections from the web interface is simpler. Review the
settings descriptions in this procedure (also available in the online help) to determine whether you
need to gather any information before you start setting up the VPN.
IP Pass-through settings
There are many application scenarios where you can use a router to decide upon alternative routes
using a primary and a secondary (or backup) interface. In many of these configurations require a
router to use a public IP address as assigned by the network over which it communicates. This
requirement is mostly owing to the router needing to establish a VPN tunnel over that interface and
using the public IP address as part of the VPN authentication. (For more on VPN tunnels, see
.)
The IP pass-through feature allows a Digi device to provide bridging functionality similar to that of a
cable or DSL modem, where the Digi device becomes “transparent” to the router or connected device.
In this case; the router’s WAN interface believes it is connected directly to the mobile network and has
no knowledge that the Digi device is the mechanism providing that connectivity.
How IP pass-through works
A Digi device configured for IP pass-through, such as a ConnectPort WAN or Digi Connect WAN, passes
its mobile IP address directly through and to the Ethernet device (router or computer) to which it is
connected through the Ethernet port. From the perspective of the connected device, the Digi device
essentially becomes transparent (similar to the behavior of a cable or DSL modem) to provide a bridge
from the mobile network directly to the end device attached to the Digi device.
Since the mobile network address is effectively “passed-through” to the local device connected to the
Ethernet port of the Digi device, all network access to it is bypassed, with some specific exceptions.
Here is an example of a Digi device configured for IP pass-through in a network with a third-party
router.