A method comprises receiving a request for secure network traffic from a device having a private network address at a source node, obtaining the private network address of a requested destination device at a destination node from a route server based on signaling information associated with the request,...http://www.google.de/patents/US20080229095?utm_source=gb-gplus-sharePatent US20080229095 - METHOD AND APPARATUS FOR DYNAMICALLY SECURING VOICE AND OTHER DELAY-SENSITIVE NETWORK TRAFFIC
