Patent ID: 7657657
Filing Date: 2010-02-02
Classification: H04L

Abstract:
1. A method for providing failover redundancy of a gateway for a remote access solution between a client and a server, the method comprising: (a) executing, by a first gateway designated as a primary gateway between a client and a server, a first application instance for an active session of an application of the server; (b) executing, by a second gateway designated as a failover gateway between the client and the server, a second application instance for a failover session of the application; (c) forwarding, by a distribution process, input from a client to the first application instance and the second application instance; (d) initiating, by the first application instance in response to the input, a first request for an application resource from the server and initiating, by the second application instance in response to the input a second request for the application resource from the server; (e) forwarding, by the first gateway, the first request for the application resource from the first application instance to the server; (f) intercepting, by a filter of the second gateway, the second request for the application resource from the second application instance and discarding the second request instead of forwarding the second request to the server; (g) detecting a failure of the first gateway; and (h) disabling, on the second gateway, the filter in response to the detection.