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5.7.1 OOB access set up
In this mode, the dial-out connection to the carrier cellular network is always on, awaiting any incoming
traffic. By default, the only traffic enabled are incoming SSH access to the console server and its serial
ports, and incoming HTTPS access to the console server. There is a low level of keep alive and
management traffic going over the cellular network; however, generally the status reports and alerts, etc.,
from the site can be carried over the main network.
This mode is used typically for out-of-band access to remote sites, and as above to be directly accessed
the appliance needs to have a Public IP address (and it must not have SSH access firewalled). This OOB
mode is the default for LES1200/LES1300/LES1400 series appliances with internal cellular modems. Out-
of-band access is enabled by default and the cellular modem connection is always on.
To be directly accessed, the console server needs to have a Public IP address and it must not have SSH
access firewalled.
Almost all carriers offer corporate mobile data service/plans with a Public (static or dynamic) IP address.
These plans often have a service fee attached.
If you have such a static Public IP address plan, you can also now try accessing the console
server using the Public IP Address provided by the carrier. By default, only HTTPS and SSH
access is enabled on the OOB connection. You can browse to the console server, but you cannot
ping it.
If you have a dynamic Public IP address plan, then a DDNS service will need to be configured to
enable the remote administrator to initiate incoming access. Once this is done, you can then also
try accessing the console server using the allocated domain name.
By default, most providers offer a consumer grade service that provides dynamic Private IP address
assignments to 3G devices. This IP address is not visible across the Internet, but generally it is adequate
for home and general business use.
With such a plan the Failover& Out-of-Band tab on the Status: Statistics shows will identify
that your carrier has allocated you a Private IP Address (i.e. in the range 10.0.0.0 –
10.255.255.255, 172.16.0.0 – 172.31.255.255 or 192.168.0.0 – 192.168.255.255)
For inbound OOB connection with such a plan you will need to use Call Home with a VCMS or
set up a VPN.
In out-of-band access mode, the internal cellular modem will continually stay connected. The alternative is
to set up Failover mode on the console server as detailed in the next section.
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