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Method and apparatus for monitoring file transfers and logical connections in a computer network

  • US 5,862,335 A
  • Filed: 04/01/1993
  • Issued: 01/19/1999
  • Est. Priority Date: 04/01/1993
  • Status: Expired due to Fees
First Claim
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1. A computer-implemented method of monitoring logical connections in a computer network, the computer network including a multiplicity of stations, a pair of stations exchanging packets via the computer network during a connection, each packet including protocol control information and user data, the protocol control information including a number of bytes of user data associated with the packet, a source station identifier, and a destination station identifier, the computer network including a connection record database having a multiplicity of records, each record including identifiers for a pair of stations associated with an existing logical connection, a last activity timestamp, and a number of bytes transferred during the logical connection, the method comprising the steps of:

  • a) determining whether a packet is part of a logical connection upon receipt of the packet, the determination including examining whether the protocol control information includes transport layer information,b) identifying the logical connection that packet is part of by searching the connection record database for a record including a pair of stations matching the source station identifier and the destination station identifier of the packet;

    c) creating a new record for the packet if no record is found identifying a pair of stations matching the source station identifier and the destination station identifier of the packet; and

    d) updating the record for the logical connection which the packet is part of, the updating including changing the last activity timestamp of the record to a value representative of a current time and increasing the number of bytes transferred during the connections by the number of bytes of user data associated with the packet.

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