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DNS based enforcement for confinement and detection of network malicious activities

  • US 20070033645A1
  • Filed: 07/22/2005
  • Published: 02/08/2007
  • Est. Priority Date: 07/22/2005
  • Status: Active Grant
First Claim
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1. A system for detection and confinement of network malicious activities originating from a local host on a local network to a remote host outside of said local network, comprising:

  • a local domain name server (DNS) server for receiving from said local host a request for an outbound connection to said remote host, completing a DNS lookup to obtain the IP address of said remote host, and generating a conformity indication; and

    a local enforcement unit connected between said local network and the remote host, for blocking establishment of said outbound connection by default, until it receives said conformity indication.

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