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Improving security of data communications networks

  • US 7,716,717 B2
  • Filed: 11/06/2006
  • Issued: 05/11/2010
  • Est. Priority Date: 07/25/2000
  • Status: Expired due to Term
First Claim
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1. A communications security system to prevent transfer of selected communication transactions from an untrustworthy network to a trustworthy network, comprising:

  • a server, connected to the untrustworthy network, configured to maintain a plurality of protection rules, each of which, when applied to a communication transaction, identifies that communication transaction to be a respective one of the selected communication transactions; and

    a portal, connected between the untrustworthy network and the trusted network, that is configured to;

    cooperate with the server to transfer the plurality of protection rules from the server to the portal via the untrustworthy network;

    receive a communication transaction from the untrustworthy network for transfer to the trustworthy network;

    apply one or more of the protection rules to the received communication transaction; and

    selectively transfer to the server at least a portion of the received communication transaction via the untrustworthy network if a protection rule identifies the received communication transaction to be a respective one of the selected communication transactions.

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