Abstract

Network monitoring device monitors the traffic from multiple users and has a capability to block or grant access to individual users. The networking monitoring hardware is a device which monitors the internet activities. The port monitoring system is a feature of the network monitoring hardware. The port monitoring system monitors packets that belong to a set of specified TCP (Transmission Control Protocol) ports and provides a variety of services based on the packets monitored thus. Some of the services provided by the monitoring/policing hardware, specifically the TCP monitoring component are forbid certain transactions based on a few configured parameters, Identify the origin of suspected fraudulent transactions, to send a copy on line based on certain criteria, work at wire line speeds and thus providing a seamless experience to the connected users, recreate the whole TCP session like replaying a VOIP (Voice Over Internet Protocol) conversation, a set of Internet activities. Every application in the TCP/IP protocol is assigned with the particular port number for transaction, so by monitoring the TCP port number the application opened by the client can be known. In the project, port numbers which are to be monitored are stored in the configuration registers and upon receiving the packet, port number of the packet is compared with configured port number and the prescribed action is taken. The modules of the port monitoring system are coded using Verilog HDL language and implemented on FPGA Spartan 3.The simulation results are verified with the hardware implementation results. A control section field contains all the information regarding each packet which is very helpful for all the modules in the network monitoring device.