Reducing data transmissions in a virtual private network

A source node comprising:

• one or more computer processors;
• and
• a memory storing instructions that, when executed by the one or more computer processors, cause the source node to:
• append a first unique identifier to a first outbound client packet scheduled to be transmitted from the source node to a first recipient node;
• after appending the first unique identifier to the first outbound client packet:
• transmit the first outbound client packet to the first recipient node via a first port of the source node, and
• create a first transmission record including the first unique identifier, a time stamp of the first outbound client packet, and an identifier for the first port, wherein the time stamp value of the first outbound client packet indicates a time at which the first outbound client packet was transmitted by the source node to the first recipient node;
• receive a first inbound client packet from the first recipient node, the first inbound client packet appended with the first unique identifier and a first delta time indicating an amount of elapsed time between the first recipient node receiving the first outbound client packet and the first recipient node transmitting the first inbound client packet;
• and
• determine a performance level of a first Virtual Private Network (VPN) tunnel provided by the first port based on the time stamp value of the first outbound client packet, the first delta time, and a time stamp value of the first inbound client packet, wherein the time stamp value of the first inbound client packet indicates a time at which the first inbound client packet was received by the source node.

A non-transitory computer-readable medium storing instructions that, when executed by the one or more computer processors, cause the source node to:

• append a first unique identifier to a first outbound client packet scheduled to be transmitted from the source node to a first recipient node;
• after appending the first unique identifier to the first outbound client packet:
• transmit the first outbound client packet to the first recipient node via a first port of the source node, and
• create a first transmission record including the first unique identifier, a time stamp of the first outbound client packet, and an identifier for the first port, wherein the time stamp value of the first outbound client packet indicates a time at which the first outbound client packet was transmitted by the source node to the first recipient node;
• receive a first inbound client packet from the first recipient node, the first inbound client packet appended with the first unique identifier and a first delta time indicating an amount of elapsed time between the first recipient node receiving the first outbound client packet and the first recipient node transmitting the first inbound client packet;
• and
• determine a performance level of a first Virtual Private Network (VPN) tunnel provided by the first port based on the time stamp value of the first outbound client packet, the first delta time, and a time stamp value of the first inbound client packet, wherein the time stamp value of the first inbound client packet indicates a time at which the first inbound client packet was received by the source node.