ClearOne NetPoint Firewall Traversal, Installation And Setup Manual, Page: 15 / 35

NetPoint Firewall Traversal Server: Installation and Setup Manual 15
Chapter 3: Collaborate Central/Gatekeeper Management
IN THIS CHAPTER
This chapter provides examples of basic topologies for networks which receive
management services from ClearOne’s Collaborate Central™ (Collaborate Central). Each
sample illustration provides examples of typical locations for NetPoint and end points within
these topologies and the IP addresses required to receive Collaborate Central/gatekeeper
management.
This chapter includes the following sections:
 Registering NAT/Firewall Protected Nodes to the

Negotiating Firewalls
REGISTERING NAT/FIREWALL PROTECTED NODES TO THE
COLLABORATE CENTRAL
This section suggests basic network scenarios and guidelines for registering the
NAT/firewall protected nodes with the Collaborate Central:

Collaborate Central Outside of LAN

Collaborate Central Inside LAN
C
OLLABORATE
C
ENTRAL
O
UTSIDE OF
LAN
In this configuration, NetPoint is not required. Collaborate Central supports H.460, allowing
an endpoint to use either H.323 or H.460 for firewall/NAT traversing. To register with the
Collaborate Central:
 The nodes outside of LAN send H.323 login requests to the Collaborate Central.

The nodes at LAN (behind firewall/NAT) send H.460 login requests to the Collaborate
Central.
C
OLLABORATE
C
ENTRAL
I
NSIDE
LAN
In this configuration, the Collaborate Central routes all signaling packets of public-public
and private-public calls through the NetPoint. Data passes through the NetPoint during calls
between public and private network devices (not for public-public).
NEGOTIATING FIREWALLS
To enable H.323 videoconferencing to traverse firewall-protected networks, ClearOne
suggests employing its NetPoint solution, opening pinholes outward in your firewall as
directed below.