METHOD FOR PROVIDING MEDIA COMMUNICATION ACROSS FIREWALLS
First Claim
1. A system for enabling packet communication between a first communication device inside a firewall and a second communication device outside the firewall, the system comprising a media proxy router connected to the firewall outside the firewall, the media proxy router being associated with a soft switch and being configured to:
- receive information contained in signaling sent to the media proxy router or to the soft switch via a signaling pinhole in the firewall, the information identifying a port at which the first communication device will listen for media traffic;
receive a packet sent to the media proxy router via a media pinhole in the firewall, the packet identifying the port at which the first communication device will listen for media traffic and identifying the media pinhole;
assign a port of the media proxy router at which the media proxy router will listen for media traffic destined for the first communication device; and
record an association between the assigned port and the media pinhole.
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Accused Products
Abstract
The present invention supports a method for transmitting information packets across network firewalls. A trusted entity is provisioned with an address designation for a pinhole through the firewall during setup of a communication session between two communication devices. This pinhole address is used throughout the communication session between the two communication devices to transmit information packets onto and out of the communication network. Information packets addressed to the communication device inside the firewall are received by the trusted entity, which replaces address header information in the information packet with the address for the pinhole. The information packet is routed to the pinhole where it passes onto the network for routing to the communication device inside the firewall. Information packets transmitted from the network are also routed to the trusted entity for routing toward the communication device outside the firewall.
26 Citations
20 Claims
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1. A system for enabling packet communication between a first communication device inside a firewall and a second communication device outside the firewall, the system comprising a media proxy router connected to the firewall outside the firewall, the media proxy router being associated with a soft switch and being configured to:
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receive information contained in signaling sent to the media proxy router or to the soft switch via a signaling pinhole in the firewall, the information identifying a port at which the first communication device will listen for media traffic; receive a packet sent to the media proxy router via a media pinhole in the firewall, the packet identifying the port at which the first communication device will listen for media traffic and identifying the media pinhole; assign a port of the media proxy router at which the media proxy router will listen for media traffic destined for the first communication device; and record an association between the assigned port and the media pinhole. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification