Patent ID: 8191119
Filing Date: 2012-05-29
Classification: H04L

Abstract:
1. An apparatus, comprising: a processing device configured to generate and store a protection token; the processing device configured to reject a received initial outgoing message and in response send back the protection token; the processing device configured to receive a subsequent outgoing message including the protection token in response to the rejection, to include the protection token in a locally generated path verification message that is used for establishing a media flow across a security device; and the processing device configured to receive, from the security device, an authorization request including an entire Simple Traversal of User Datagram Protocol (UDP) through Network Address Translators (STUN) request that includes the protection token, to compare the stored protection token with the STUN request, to remove the protection token and send the entire tokenless STUN request back to the security device to authorize forwarding by the security device.