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Directory Brands Polycom manuals Computer Accessories 1 Manual H.460 nat firewall traversal, H.460 nat firewall traversal -14, More information, refer to – Polycom 1 User Manual

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Administrator’s Guide for Polycom HDX Systems

2 - 14

H.460 NAT Firewall Traversal

You can configure Polycom HDX 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 V

2

IU™

traversal server gateway is on the edge of the service provider network and facilitates IP calls between Polycom HDX systems behind different firewalls.

To use this traversal, Polycom HDX systems and firewalls must be configured as follows:

• Enable firewall traversal on the Polycom HDX system.

• Register the Polycom HDX system to an external V

2

IU Traversal Server

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

• Make sure that firewalls being traversed allow Polycom HDX systems

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

• For best interoperability, make sure that H.323 protocol-aware features are

disabled on firewalls being traversed.

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

V

2

IU Server Gateway

Traversal Enabled

System with Traversal Enabled

that Supports H.460.18and H.460.19

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