Patent ID: 8787358
Filing Date: 2014-07-22
Classification: H04L

Abstract:
1. A method comprising: storing a list of approved destination endpoints, wherein the approved destination endpoints provide access to a secured network for a source endpoint regardless of whether the source endpoint has been authenticated on the secured network; storing a table of authenticated source endpoints authenticated on the secured network; receiving a session internet protocol (SIP) invite message at a network device of the secured network, wherein the SIP invite message includes data indicative of the source endpoint and data indicative of a destination endpoint; comparing the data indicative of the source endpoint to the table of authenticated source endpoints to determine whether the source endpoint is represented in the table of authenticated source endpoints; forwarding the SIP invite message to the destination endpoint, if the source endpoint is represented in the table of authenticated source endpoints; comparing the list of approved destination endpoints to the data indicative of the destination endpoint to determine whether the destination endpoint is represented in the list of approved destination endpoints, if the source endpoint is not represented in the table of authenticated source endpoints; and forwarding the SIP invite message to the destination endpoint, if the destination endpoint is represented in the list of approved destination endpoints.