In the initialization window, WireShark would get as far as 'Loading module preferences', or about three quarters of the way done, and in the bottom of the window it would say 'Please wait while Wireshark is initializing.' and then freeze-up. Regardless of which version I used, WireShark keep freezing up during the initialization process.

I made repeated attempts to use both WireShark 1.12.4 and 1.99.3, but without success. Some of this has been shared before, but there is a little added twist at the end which worked for me. This may possibly be of help to other new WireShark users who are having trouble getting WireShark to launch in Yosemite. Coloring rules can be applied to the packet list, which eases analysis.Hundreds of protocols are supported, with more being added all the time.Capture files compressed with gzip can be decompressed on the fly.Read/write many different capture file formats: 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, Visual Networks' Visual UpTime and many others.Live capture and offline analysis are supported.The most powerful display filters in the industry.Multi-interface: Along with a standard GUI, Wireshark includes TShark, a text-mode analyzer which is useful for remote capture, analysis, and scripting.

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

Wireshark has a rich feature set which includes the following: Hundreds of developers around the world have contributed to it, and it it still under active development. It is the continuation of a project that started in 1998. Wireshark is one of the world's foremost network protocol analyzers, and is the standard in many parts of the industry.

Wireshark download for linux