Polycom V500 Administrator's Manual page 32

Administrator's Guide for the V500 System
3 - 12
Setting
NAT Configuration
NAT Public (WAN)
Address
NAT is H.323
Compatible
Address Displayed in
Global Directory
Configure the V500 system for specific products as follows:
If you use this type of
NAT or firewall:
® ®
Cisco PIX
NOTE: Do not select the
Fix Up H.323 feature.
®
Cisco Router NAT
®
Linksys
®
Netgear
®
SMC Barricade™
Systems deployed outside a firewall are potentially vulnerable to unauthorized access. Visit
the Polycom Security Center at
also register to receive periodic email updates and advisories.
Description
Lets you specify whether the system should determine the
NAT Public WAN Address automatically.
• If the system is behind a NAT that allows HTTP traffic, select
Auto.
• If the system is behind a NAT that does not allow HTTP
traffic, select Manual.
• If the system is not behind a NAT or is connected to the IP
network through a Virtual Private Network (VPN), select Off.
• If the system is behind a firewalled NAT router that is
UPnP™ (Universal Plug and Play) certified, select UPnP.
Many routers used in homes and small businesses support
UPnP NAT traversal. If this is your situation, try selecting
UPnP first. If this selection does not work for your router,
select Auto or Manual.
Displays the address that callers from outside the LAN use to
call your system. If you chose to configure the NAT manually,
enter the NAT Public Address here.
Specifies that the system is behind a NAT that allows HTTP
traffic.
Lets you choose whether to display this system's public or
private address in the Global Directory.
Configure your V500 system this way:
Use Fixed Ports System is
Behind a NAT
Yes Yes
No No
Yes Setting is ignored
No No
Yes Yes
www.polycom.com for timely security information. You can
NAT is H.323
Compatible
No
No
No
Yes
No
www.polycom.com/videodocumentation