Hardware-based granular traffic storm protection

Hardware-based granular traffic storm protection

  • CN 103,731,361 A
  • Filed: 10/12/2013
  • Published: 04/16/2014
  • Est. Priority Date: 10/12/2012
  • Status: Active Application
First Claim
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1. for a network equipment for industrial control system, comprising:

  • Port, is adapted to by industrial control network and transmits Industry Control protocol packet;

    Be coupled to the switched circuit of described port, be adapted to based on being included in the addressing information in inbound grouping described inbound grouping is sent to destination from described port;

    AndBe coupled to the grouping evaluation circuits of described port, wherein, described grouping evaluation circuits is adapted to for each described inbound grouping;

    (a), before described switched circuit can send described inbound grouping, assessment is included in the one or more protocol fields in described inbound grouping;

    (b), if described inbound grouping comprises the particular message being represented by assessed one or more protocol fields, allow described switched circuit to send described inbound grouping;

    And(c) if if described inbound grouping does not comprise described particular message for sending and during preset time section the total bytes of inbound packet type exceed threshold value, optionally forbid that described switched circuit sends described inbound grouping.

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