Analyzes the features of promiscuous, gives the method of designing network monitoring system in Visual C enviroment, to detect network data packet.

Detection and application of promiscuous mode network card in Linux-based LAN;

Design and Implementation of Data Collection in Network Accounting System Based on Promiscuous Mode;

The paper describes the design and realization of the security gateway for network computer rooms in schools and explains the key techniques such as the network data selection based on the "promiscuous mode",the network authentication "based on users",network access control based on Linux firewall,and embedded web server.