The embodiments of the present invention provide for methods, devices, and systems for providing quality of service (QoS) to network data that is received by an intermediate node in a local area network. In general, the embodiments of the present invention generally evaluate network traffic. Certain streams or flows are copied in appropriate buffer areas and accordingly evaluated by their traffic flow characteristics and further evaluated to determine if such streams/flows contain signaling or control information, which may be based on characteristic key words and/or structures. Based on the signaling or control information extracted, the appropriate stream is accordingly assigned or configured for quality of service (QoS) handling.