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Logical network separation method and apparatus

  • US 9,503,420 B2
  • Filed: 10/09/2013
  • Issued: 11/22/2016
  • Est. Priority Date: 04/09/2013
  • Status: Expired due to Fees
First Claim
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1. A logical network separation method for a service request packet, performed by a network separation apparatus, the logical network separation method comprising:

  • wherein the network separation apparatus includes a user interface, an external network interface, and an internal network interface, the user interface is used for communication with a user terminal, the external network interface is used for communication with an external network, the internal network interface is used for communication with an internal network,receiving the service request packet from the user terminal via the user interface;

    determining whether a destination of the service request packet is an external network or an internal network;

    generating a first hash key on the basis of address information included in the service request packet when it is determined that the destination of the service request packet is the external network;

    determining whether the first hash key is in a hash table;

    generating hash information on the basis of a transmission property of the service request packet corresponding to the first hash key when the first hash key is not in the hash table;

    generating a policy about reception of a service response packet corresponding to the service request packet on the basis of the destination of the service request packet, wherein the policy is used for determining whether to permit reception of the service response packet; and

    transmitting the service request packet to the external network via the external network interface,wherein the policy about the reception of the service response packet comprises a policy to permit the reception of the service response packet corresponding to the service request packet or a policy to block the reception of the service response packet corresponding to the service request packet.

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