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Method and systems for securing remote access to private networks

  • US 8,291,119 B2
  • Filed: 07/22/2005
  • Issued: 10/16/2012
  • Est. Priority Date: 07/23/2004
  • Status: Active Grant
First Claim
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1. A method of routing packets, the method comprising:

  • (a) intercepting, at a data link layer by a filter executing in a kernel space of a client operating in a first network, an outbound network packet transmitted from an application of the client to a server, the server operating in a second network, the filter terminating a first transport layer connection with the application;

    (b) transmitting , by the filter, the outbound network packet to a port monitored by a client application at an application layer executing in a user space of the client, the client application terminating a second transport layer connection with a gateway and communicating with the gateway via a secure application layer tunnel over the second transport layer connection;

    (c) receiving, by the gateway, the outbound network packet via the secure application layer tunnel over the second transport layer connection from the client application;

    (d) forwarding, by the gateway via a third transport layer connection with the server, the outbound network packet to the server; and

    (e) intercepting at a data link layer by a capture driver executing in the gateway, a second network packet transmitted from the server to the client.

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