Airlink X EV-DO - Manual (Page 137)

Raven X EV-DO for Verizon - User Guide, version 2.34 131
Frequently Asked Questions and Technical Support
The Raven X’s IP Addresses and Local Networking
On Verizon’s network, for security reasons, some accounts set up to be restricted to communication
only from other devices on their network, called a Restricted IP or a Private IP. If you had two
modems on Verizon’s network, they could communicate, but your computer, not using Verizon as
an ISP can’t. You could normally still access the Internet using your Raven X’s restricted or pri-
vate IP because the modem would use a proxy or gateway on Verizon’s network.
Why Can’t I reach my Raven X from the Internet? What is a Restricted or
Private IP?
However, if you need to be able to contact your Raven X (or the devices behind it) directly,
instead of a Restricted IP (also called Private IP or Non-Routable IP), you will need to contact
Verizon your cellular provider to get your account changed to an Unrestricted IP (also called
Public IP).
What is the difference between Private and Public mode?
When your Raven X is powered on, ALEOS, acting as a PPP client, negotiates a PPP session with
Verizon’s network at the conclusion of which it is assigned an IP address by your cellular pro-
vider. How this address is further acted upon by the modem is determined by Private or Public
Mode.
Public Mode (*HOSTPRIVMODE=0):
The IP address assigned by Verizon is passed on to the devices connected to the modem.
If there is a computer or device connected to the modem’s Ethernet port, the IP address assigned
by your cellular provider is passed on to the computer or device by the DHCP server in the
modem.
Private Mode (*HOSTPRIVMODE=1):
The IP address assigned by Verizon is not the address that is assigned to the computer or device
connected to the Raven X’s Ethernet port during the PPP negotiation or DHCP IP assignment.
Instead, the computer or device connected to the Raven X on the Ethernet port is assigned the IP
address configured in *HOSTPRIVIP and uses the IP address configured in *HOSTPEERIP to
communicate to the modem.
How do I set up Private Mode? How do I connect to my Raven X to my router
or to Linux?
Private Mode is at times preferred or required to provide network connectivity to a Linux device,
routers, or other devices. Private mode will generally also work with any PC in an environment
where there is a need for the Raven X to be configured to work with an internal network.
There are four AT commands you will need to set in the modem. You can set them using Wireless
Ace or a AT commands with a terminal connection (page 47). The examples shown are from
Wireless Ace.
*HOSTPRIVMODE=1 - Private Mode turned on.