(Network monitoring is also known as network sniffing (Sniffer), which is a tool that uses the network interface of a computer to intercept data packets destined for other computers. There are many tools of Sniffer, among which EtherPeekNX of WildPackets is one of the more commonly used and more functional ones. In 2003 CMPMedia#39;sNetworkMagazine on WildPackets enterprise's EtherPeekNXv2.0 and RMONGrabber was named the best product.)