Configuring Firewall and LAN Connection Settings
© Polycom, Inc. 2003
Chapter 4 - Advanced Configuration for your Network Environment
The Firewall & LAN Connection screen allows the LAN manager
to configure firewall options.
To access the Firewall & LAN Connection screen:
Select System Info > Admin Setup > LAN/H.323 > LAN/Intranet >
Firewall/LAN Connection. The following screen appears:
Figure 4-3. Firewall & LAN Connection Screen
In this screen, you can configure the following options:
Use Fixed Ports—Specify the fixed ports assigned to the system
when working with a firewall. For information on port
assignments in multipoint calls, refer to
Firewall Information on page
System is Behind a NAT—This option instructs the system to
use the IP address that appears in the NAT Outside (WAN)
Address field as its external IP address. When using a Virtual
Private Network (VPN) for your network connection, make
sure that System is Behind a NAT is not selected.
If your system is behind a NAT device that is not H.323 aware,
then select this option. If your system is behind an H.323-aware
NAT device, make sure the option is not selected or your system
will not be able to make and receive calls.
Auto Discover NAT—When this option is selected, the system
can get its IP address from the NAT device.
Multipoint Calls and
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