Wireshark was written by networking experts around the world, and is an example of the power of open source. Portable Wireshark can be used by network professionals around the world for analysis, troubleshooting, software and protocol development and education.

· Data can be captured "off the wire" from a live network connection, or read from a capture file.
· Wireshark can read capture files from tcpdump (libpcap), NAI's Sniffer (compressed and uncompressed), Sniffer Pro, NetXray, Sun snoop and atmsnoop, Shomiti/Finisar Surveyor, AIX's iptrace, Microsoft's Network Monitor, Novell's LANalyzer, RADCOM's WAN/LAN Analyzer, HP-UX nettl, i4btrace from the ISDN4BSD project, Cisco Secure IDS iplog, the pppd log (pppdump-format), the AG Group's/WildPacket's EtherPeek/TokenPeek/AiroPeek, or Visual Networks' Visual UpTime. It can also read traces made from Lucent/Ascend WAN routers and Toshiba ISDN routers, as well as the text output from VMS's TCPIPtrace utility and the DBS Etherwatch utility for VMS. Any of these files can be compressed with gzip and Ethereal will decompress them on the fly.
· Live data can be read from Ethernet, FDDI, PPP, Token-Ring, IEEE 802.11, Classical IP over ATM, and loopback interfaces (at least on some platforms; not all of those types are supported on all platforms).
· Captured network data can be browsed via a GUI, or via the TTY-mode "tethereal" program.
· Capture files can be programmatically edited or converted via command-line switches to the "editcap" program.
· 602 protocols can currently be dissected
· Output can be saved or printed as plain text or PostScript.
· Data display can be refined using a display filter.
· Display filters can also be used to selectively highlight and color packet summary information.
· All or part of each captured network trace can be saved to disk.

Requirements:
· WinPcap 4.x

What's New in This Release:
New and Updated Features:
· Wireshark can import text dumps, similar to text2pcap.
· You can now view Wireshark's dissector tables (for example the TCP port to dissector mappings) from the main window.
· TShark can show a specific occurrence of a field when using '-T fields'.
· Custom columns can show a specific occurrence of a field.
· You can hide columns in the packet list.
· Wireshark can now export SMB objects.
· dftest and randpkt now have manual pages.
· TShark can now display iSCSI service response times.
· Dumpcap can now save files with a user-specified group id.
· Syntax checking is done for capture filters.
· You can display the compiled BPF code for capture filters in the Capture Options dialog.
· You can now navigate backwards and forwards through TCP and UDP sessions using Ctrl+, and Ctrl+. .
· Packet length is (finally) a default column.
· TCP window size is now avaiable both scaled and unscaled. A TCP window scaling graph is available in the GUI.
· 802.1q VLAN tags are now shown by...