A-1
Appendix A. Example of Port
Forwarding using the Modem
In this example, the 4GMini/4GPlus and all related equipment
have been configured to allow for the simultaneous connection
of 2 dataloggers to the modem. The first datalogger, a CR200X,
is connected directly to the RS-232 port of the modem via a null
modem cable. The second datalogger, a CR1000, is networked
to the modem via an NL201 and a pair of RF401A radios. In any
such arrangement it is important to configure the firewall and
port forwarding rules to ensure proper access, while maintaining
a reasonable level of protection.
This example assumes that all necessary configuration steps
were taken to provision the modem on the network in either a
Static or Dynamic IP arrangement, as well as the NL201
being configured properly with an IP address of
192.168.168.2.
Following is a diagram of the physical connection of the
applications:
FIGURE A-1. Physical connections of the application
