Real-time media communications over firewalls using a...

Details Real-time media communications over firewalls using a... Real-time media communications over firewalls using a...

2005-07-26

2005-07-26

Hua, Ly V. (Department: 2135)

Electrical computers and digital processing systems: support

Multiple computer communication using cryptography

Protection at a particular protocol layer

C713S152000, C709S227000, C709S204000, C704S270000

Reexamination Certificate

active

06922786

ABSTRACT:
In one embodiment of the invention, a real-time firewall processor includes a controller and a filter. The controller specifies a filtering characteristic based on a control protocol from a call server serving a firewall between a source and a destination networks. The filter is coupled to the controller to filter a packet in a call transmitted from the source network based on the filtering characteristic, the filter accepting the packet if the packet satisfies the filtering characteristic and rejecting the packet otherwise.

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