Polycom RealPresence Immersive Studio Administrator's Manual page 34

Firewall Settings
Setting
Fixed Ports
TCP Ports
UDP Ports
Enable H.460 Firewall Traversal
Polycom, Inc.
Description
Lets you specify whether to define the TCP and
UDP ports.
• If the firewall is not H.323 compatible,
enable this setting. The RealPresence
ITP system assigns a range of ports
starting with the TCP and UDP ports
you specify. The system defaults to a
range beginning with port 3230 for both
TCP and UDP.
Note: You must open the corresponding ports in
the firewall. You must also open the firewall's TCP
port 1720 to allow H.323 traffic.
• If the firewall is H.323 compatible or the
system is not behind a firewall, disable
this setting.
For IP you need 2 TCP and 8 UDP ports per
connection. For SIP you need TCP port 5060 and 8
UDP ports per connection.
Note: Because RealPresence ITP supports ICE,
the range of fixed UDP ports is 112. The system
cycles through the available ports from call to call.
After the system restarts, the first call begins with
the first port number, either 49152 or 3230.
Subsequent calls start with the last port used, for
example, the first call uses ports 3230 to 3236, the
second call uses ports 3236 to 3242, the third call
uses ports 3242 through 3248, and so on.
Specifies the beginning value for the range of TCP
and UDP ports used by the system. The system
automatically sets the range of ports based on the
beginning value you set.
Note: You must also open the firewall's TCP port
1720 to allow H.323 traffic.
Enables the system to use H.460-based firewall
traversal for IP calls.
Securing the System
32