12, H.460 Nat Firewall | Polycom 6000 User Manual | Page 24 / 126

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Administrator Guide for Polycom QDX 6000 System

2 - 12

H.460 NAT Firewall Traversal

You can configure Polycom QDX 6000 systems to use standards-based

H.460.18 and H.460.19 firewall traversal, which allows video systems to more

easily establish IP connections across firewalls.The following illustration shows how a service provider might provide H.460

firewall traversal between two enterprise locations. In this example the

Polycom Video Border Proxy™ (VBP™) firewall traversal device is on the

edge of the service provider network and facilitates IP calls between Polycom

QDX 6000 systems behind different firewalls.

To use this traversal, Polycom QDX 6000 systems and firewalls must be

configured as follows:

• Enable firewall traversal on the Polycom QDX 6000 system.

a.

Go to System > Admin Settings > Network > IP > Firewall.

b.

Select Enable H.460 Firewall Traversal.

• Register the Polycom QDX 6000 system to an external Polycom VBP

device that supports the H.460.18 and H.460.19 standards.

• Make sure that firewalls being traversed allow Polycom QDX 6000

systems behind them to open outbound TCP and UDP connections. — Firewalls with a stricter rule set should allow Polycom QDX 6000

systems to open at least the following outbound TCP and UDP ports:

1720 (TCP), 14085-15084 (TCP) and 1719 (UDP), 16386-25386 (UDP).

— Firewalls should permit inbound traffic to TCP and UDP ports that

have been opened earlier in the outbound direction.

Visit the Polycom Security section of the Knowledge Base at

www.polycom.com

for

timely security information. Systems deployed outside a firewall are potentially vulnerable to unauthorized access. You can also register to receive periodic email updates and advisories.

Gatekeeper

IP Network

System with

Enterprise Location A

Enterprise Location B

Service Provider

Polycom VBP device

Traversal Enabled

System with Traversal Enabled

that Supports H.460.18and H.460.19

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