Configure Your Viavideo For Nat; Assign Your Viavideo To The Dmz - Polycom ViaVideo User Manual

Appendix
© Polycom, Inc.
In addition to placing the PC running ViaVideo in the DMZ, you also
need to configure your ViaVideo to run behind a Network Address
Translator (NAT)

Configure Your ViaVideo for NAT

In addition to assigning your PC running ViaVideo to the DMZ, you
also need to configure your ViaVideo to use your router's NAT.
1. To configure your VIaVideo to use your router's NAT:
2. Go to the Quality of Service and Firewall screen (System
Info>Setup>H.323>QOS).
3. Select the System is Behind a NAT option.
4. Enter your NAT's external IP address in the NAT Outside
(WAN) Address field.
You can enter the address manually, or let ViaVideo enter it
automatically by selecting the Auto discover NAT IP Address
option.
When you select Auto discover NAT IP Address, ViaVideo
automatically discovers your external IP address and enters it in
the NAT Outside (WAN) Address field.
If you are using a proxy server, the Auto discover NAT IP
Address option may not work correctly. You should enter your
NAT's external IP address manually in this case.

Assign your ViaVideo to the DMZ

If your router's firewall software provides a "Demilitarized Zone" or
DMZ, simply follow your firewall's instructions to assign the internal
IP address of the PC running VIaVideo to the DMZ. This allows full
external access for the PC running ViaVideo, while the other devices
in your internal network are protected by the firewall.
Note This solution does not provide protection for the PC running
ViaVideo. For more information about DMZs, see "What's a
DMZ?," on page 74.
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Network Connection
ViaVideo User's Guide