SoC implementation of network intrusion detection using counting bloom filter

The concept of Counting Bloom Filters, an extension of Bloom Filters, was used to design and realize a Network Intrusion Detection System. It was implemented on Spartan 3A FPGA to detect and mitigate threats in real time. The data was transmitted wirelessly from one FPGA to another, through the transmitter and receiver module connected to them, with the helical antenna carrier frequency at 433 MHz. The prevention mechanism entailed the circulation of a warning message at the receiver upon reception of the signals, regarding the presence or absence of virus in the network, and displaying it on the LCD. The proposed model of hardware based NID system eliminated the shortcomings of conventional software based NID systems of having to choose between increased protection and higher data rates, and also provided very high throughput.