Wireshark - Network Protocol Analyzer


Wireshark is the world's foremost network protocol analyzer, and is the de facto (and often de jure) standard across many industries and educational institutions.


Wireshark has a rich feature set which includes the following:

* Deep inspection of hundreds of protocols, with more being added all the time

* Live capture and offline analysis

* Standard three-pane packet browser

* Multi-platform: Runs on Windows, Linux, OS X, Solaris, FreeBSD, NetBSD, and many others

* Captured network data can be browsed via a GUI, or via the TTY-mode TShark utility

* The most powerful display filters in the industry

* Rich VoIP analysis

* Read/write many different capture file formats: tcpdump (libpcap), Pcap NG, Catapult DCT2000, Cisco Secure IDS iplog, Microsoft Network Monitor, Network General Sniffer® (compressed and uncompressed), Sniffer® Pro, and NetXray®, Network Instruments Observer, NetScreen snoop, Novell LANalyzer, RADCOM WAN/LAN Analyzer, Shomiti/Finisar Surveyor, Tektronix K12xx, Visual Networks Visual UpTime, WildPackets EtherPeek/TokenPeek/AiroPeek, and many others

* Capture files compressed with gzip can be decompressed on the fly

* Live data can be read from Ethernet, IEEE 802.11, PPP/HDLC, ATM, Bluetooth, USB, Token Ring, Frame Relay, FDDI, and others (depending on your platfrom)

* Decryption support for many protocols, including IPsec, ISAKMP, Kerberos, SNMPv3, SSL/TLS, WEP, and WPA/WPA2

* Coloring rules can be applied to the packet list for quick, intuitive analysis

* Output can be exported to XML, PostScript®, CSV, or plain text

Download : http://www.wireshark.org/download.html