The networking transmission is mostly bound to the Peer-to-Peer (P2P) technique that P2P feature is to accelerate the transmission as quick as more clients added which causes the bandwidth of LAN/ WAN is fully stuffed by the P2P packets. Once the LAN seriously jammed, the users’ ability to connection are interrupted whether how big the bandwidth is. That is, the connection failed from the LAN and is interfered by the packets that switching and colliding. This research aims to solve the jam-packed LAN and to analyze the P2P features by establishing the most affective rules as follows using the Default Port Solution, L7 Filter Solution, Session Limit Solution, and Flow Control Solution—that the four suitable ways are expected to reduce the P2P influence on LAN to minimum and then to clarify the troubles in connecting; and eventually, to exalt the network bandwidth and service in its own quantity and quality function
