Sierra Wireless RAVEN 20080605, Руководство пользователя

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Introduction to the Raven XE
Rev 1.0 Oct.09 7
It is recommended that you use a USB 2.0 cable with your
Raven XE and connect directly to your computer for best
throughput.
Virtual serial port
The Raven XE supports one virtual serial port over USB. This
VSP can be used, for example, to send AT commands, or to run
many serial based applications such as HyperTerminal
®
.
Networking
IPSec
The IP protocol that drives the Internet is inherently insecure.
Internet Protocol Security (IPSec), which is a standards ‐ based
protocol, secures communications of IP packets over public
networks.
IPSec is a common network layer security control and is used
to create a virtual private network (VPN).
The advantages of the IPSec feature includes:
•
Data Protection: Data Content Confidentiality allows users
to protect their data from any unauthorized view, because
the data is encrypted (encryption algorithms are used).
• Access Control: Access Control implies a security service
that prevents unauthorized use of a Security Gateway, a
network behind a gateway or bandwidth on that network.
•
Data Origin Authentication: Data Origin Authentication
verifies the actual sender, thus eliminating the possibility
of forging the actual sender’s identification by a third ‐
party.
• Data Integrity: Data Integrity Authentication allows both
ends of the communication 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 communi ‐
cating, 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.