User guide

Introduction to the AirLink GX440
Rev 1.0 Jan.12 17
• Data Origin Authentication: Data Origin Authentication verifies the actual
sender, thus eliminating the possibility of forging the actual sender’s identifi-
cation by a third-party.
• Data Integrity: Data Integrity Authentication allows both ends of the communi-
cation channel to confirm that the original data sent has been received as
transmitted, without being tampered with in transit. This is achieved by using
authentication algorithms and their outputs.
The IPSec architecture model includes the Sierra Wireless AirLink gateway as a
remote gateway at one end communicating, through a VPN tunnel, with a VPN
gateway at the other end. The remote gateway is connected to a Remote network
and the VPN is connected to the Local network. The communication of data is
secure through the IPSec protocols.
Figure 1-6: IPsec Architecture
GRE
GRE (Generic Routing Encapsulation) is a tunneling protocol used to carry
non-IP packets through an IP Network. Non-IP packets sent over the GRE tunnel
must first be encapsulated. Hence, ALEOS is used to configure and encapsulate
non-IP packets and transmit them over IP through the GRE tunnel.
Applications
Events Reporting
Events Reporting is a Sierra Wireless AirLink device feature, provided by
ACEmanager, that allows the users to generate reports from the events that take
place. Events Reporting Protocol is an intuitive embedded protocol which
automatically formats the messages based on an event trigger. The messages
generated are then reported to the remote server.