(Based on the accurate identification of protocols, i.e. the classification of applications, panabit provides flexible and convenient traffic management mechanisms according to user-defined policies: bandwidth speed limit, bandwidth guarantee and bandwidth reservation, and can set parameterized policies based on protocols / protocol groups and ip/ip groups. Panabit uses innovative & amp; quot; Node tracking & amp; quot; Technology & amp; amp; quot; Encryption protocol depth identification & amp; quot; Technology improves the recognition efficiency and accuracy, such as accurate recognition of eMule and Skype using encryption protocol. Panabit is different from some similar devices. It is unscientific to limit the number of concurrent connections at the client without accurately identifying the protocol, which is easy to cause misjudgment or affect normal users. Panabit is a real application layer flow control system, which can perform speed limit control; If the system is suspected to be identified and cannot accurately locate the specific application, it does not dare to do speed limit control and cannot achieve the flow control effect of the actual application layer.)