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Cost reduction of NAT connection state keep-alive

  • US 8,023,432 B2
  • Filed: 03/12/2007
  • Issued: 09/20/2011
  • Est. Priority Date: 03/12/2007
  • Status: Active Grant
First Claim
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1. A computer-implemented method of managing a communications connection, comprising acts of:

  • establishing an IP connection between an external network and a wireless device of an internal network via a network boundary device;

    receiving a keep-alive packet from the external network into the network boundary device;

    resetting a connection timer when the keep-alive packet is received;

    maintaining the IP connection between the external network and the wireless device via the network boundary device based on receipt of the keep-alive packet only from the external network;

    monitoring the IP connection of the network boundary device based on utilization of an enhanced keep-alive packet processing mode;

    automatically changing to a standard keep-alive packet processing mode based on reduced quality in connection state; and

    utilizing a processor that executes instructions stored in memory to perform the acts of establishing, receiving, resetting, maintaining, monitoring, and automatically changing.

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