(Panabit Standard Edition is the most open, free and professional application layer traffic management system in China, especially for the identification and control of P2P applications. As of March 25, 2009, it has supported more than 240 actual mainstream applications, The feature library is updated continuously at the rate of once every two weeks (including the updates of supported protocols and new protocols. For the list of panabit support protocols, please pay attention to the & amp; quot; support protocols & amp; quot; on the homepage of panabit website). 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.)