Wireshark 2.4.1

wireshark

Wireshark is a network packet analyzer. A network packet analyzer will try to capture network packets and tries to display that packet data as detailed as possible. You could think of a network packet analyzer as a measuring device used to examine what's going on inside a network cable, just like a voltmeter is used by an electrician to examine what's going on inside an electric cable (but at a higher level, of course). In the past, such tools were either very expensive, proprietary, or both. However, with the advent of Wireshark, all that has changed. Wireshark is perhaps one of the best open source packet analyzers available today.

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
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

Fixed bugs in version 2.4.1:

Incorrect presentation of Ascend-Data-Filter (RADIUS attribute 242). (Bug 11630)
Confusing "Apply a display filter " keyboard shortcut. (Bug 12450)
Wireshark crashes at startup if it needs to display a dialog early in the startup process. (Bug 13275)
RADIUS dictionary: BEGIN-VENDOR does not support format=Extended-Vendor-Specific-\*. (Bug 13745)
Dumpcap on big-endian machines writes out corrupt, unreadable Enhanced Packet Blocks. (Bug 13802)
Interface Toolbar support for Windows. (Bug 13833)
Wireshark should behave better on high resolution displays on Windows. (Bug 13877)
Udpdump.pod missing from build. (Bug 13903)
RTP Player Format Error. (Bug 13906)
VNC Protocol disector : Framebuffer Updates. (Bug 13910)
DNS LOC RRs with out-of-range longitude or latitude aren’t shown as errors. (Bug 13914)
DIS Dissector Entity Appearance Record displayed in wrong location. (Bug 13917)
Win64 CMake bug - (CYGWIN_INSTALL_PATH redefinition) causing missing packages when using CMake 3.9.0. (Bug 13922)
APL records parsed incorrectly for IPv4 prefixes. (Bug 13923)
File→Merge dialog doesn’t show all options. Resizing doesn’t help. (Bug 13924)
TCAP SRT Analysis incorrectly matched TCAP begins and ends. (Bug 13926)
Error in MKA Distributed SAK parameter set dissection. (Bug 13927). [full release notes]