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AirLink GX440 for Verizon LTE User Guide

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Security

CDMA data transmissions are highly secure. Originally developed based upon

the “spread spectrum” pioneered by the US Department of Defense, security in

CDMA technologies is obtained by spreading the digital information contained in

a particular signal of interest over multiple coded paths, and over a much greater

bandwidth than the original signal.

Connection Methods

You can connect the AirLink GX440 to a USB (micro A/B), an Ethernet (RJ45), or

a serial (RS232) port on a computer. When connected to a USB or Ethernet port,

the AirLink GX440 behaves like a network card.

USB

The AirLink GX440 is equipped with a USB port which increases the methods by

which you can send and receive data. The USB port can be set to work as either

a virtual Ethernet port or a virtual serial port. A driver installation is required to

use the USB port in either mode.

It is recommended that you use a USB 2.0 cable with your AirLink GX440 and

connect directly to your computer for best throughput.

Virtual Serial Port

The AirLink GX440 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.

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Sierra Wireless AceView User's Guide Page 16