Agile network protocol for secure communications with assured system availability

  • US 6,502,135 B1
  • Filed: 02/15/2000
  • Issued: 12/31/2002
  • Est. Priority Date: 10/30/1998
  • Status: Expired due to Term
First Claim
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1. A method of transparently creating a virtual private network (VPN) between a client computer and a target computer, comprising the steps of:

  • (1) generating from the client computer a Domain Name Service (DNS) request that requests an IP address corresponding to a domain name associated with the target computer;

    (2) determining whether the DNS request transmitted in step (1) is requesting access to a secure web site; and

    (3) in response to determining that the DNS request in step (2) is requesting access to a secure target web site, automatically initiating the VPN between the client computer and the target computer.

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