Wireshark Network Protocol Traffic Analyzer Application
Wireshark is a free and open source network traffic analyzer software for Linux, MacOS, Solaris, FreeBSD, NetBSD and Windows. Using Wireshark you can see what’s happening on your network at a detailed level. It supports more than 100 protocols, filters, live capture of the data and offline analysis of the data. It supports Ethernet, IEEE 802.11, PPP/HDLC, ATM, Bluetooth, USB, Token Ring, Frame Relay and FDDI network types.