Restricting Reserved Ports - LifeSize Passport User Manual

Enabling Network Address Translation (NAT)
Network Address Translation (NAT) enables communication between devices on your LAN
that have private IP addresses and devices that are accessed through a public IP network.
Static NAT ensures that the same public IP address always maps to a system's private IP
address so that data from the public network intended for the private system can be routed
to the system reliably.
If you are using static NAT to associate a public IP address with the private IP address of
your LifeSize system, you must configure your LifeSize system to work with your static NAT
server. Access Administrator Preferences : Network : NAT and select Enabled for the
Static NAT preference. Enter the public IP address, hostname, or fully qualified domain
name of your system in NAT Public IP Address. The default entry method for this
preference is numeric. To enter text, use the
entry method to text.
Note: If you are using a static firewall or NAT with fixed ports, you cannot register to a
public gatekeeper. If you configure H.323 settings and enable H.460 support, the
system ignores preferences in Administrator Preferences : Network : NAT. Refer
to "Enabling H.460 Support for H.323 Calls" on page 44 for more information.
The following functions are not supported if your system is accessed from a web browser
outside a firewall and static NAT is enabled:
• System Upgrade
• Directory Import
• Background Image Import
To work around this issue, execute these functions from within the firewall.

Restricting Reserved Ports

By default, LifeSize systems communicate through TCP and UDP ports in the range 60000 -
64999 for video, voice, presentations, and camera control. LifeSize systems use only a
small number of these ports during a call. The exact number depends on the number of
participants in the call, the protocol used, and the number of ports required for the type
(video or voice) of call.
To minimize the number of UDP and TCP ports that are available for communication, you
can restrict the range by entering values in Administrator Preferences : Network :
Reserved Ports. LifeSize recommends that the range you choose, if other than a subset of
the default range, begins with a port number greater than 10000.
Note: Changing the TCP range causes an automatic reboot of the system.
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key on the remote control to change the
LifeSize Passport User Guide