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Methods and systems using PLD-based network communication protocols

  • US 20020080784A1
  • Filed: 12/21/2000
  • Published: 06/27/2002
  • Est. Priority Date: 12/21/2000
  • Status: Abandoned Application
First Claim
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1. A method for filtering packets from an external network using a programmable logic device-based system (“

  • PLD system”

    ), comprising the steps of;

    operating the PLD system in accordance with first configuration data, wherein the PLD system filters packets from the external network in accordance with a first set of filtering rules based on the first configuration data;

    receiving a user input to the PLD system, wherein in response to the user input the PLD system operates to receive packets from a computing system coupled an internal network;

    sending at least a first packet from the computing system to the PLD system over the internal network;

    in response to the first packet, sending at least a second packet from the PLD system to the computing system over the internal network, wherein the second packet contains information identifying the PLD system and also information indicative of one or more commands in accordance with the protocol, wherein the PLD system operates in accordance with the one or more commands;

    in response to the second packet, sending at least a third packet from the computing system to the PLD system, wherein the third packet comprises a command in accordance with the protocol and contains at least second configuration data for the PLD system;

    loading the second configuration into the PLD system; and

    operating the PLD system in accordance with the second configuration data, wherein the PLD system filters packets from the external network in accordance with a second set of filtering rules based on the second configuration data.

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