Wireshark.org - (Open Source)
Wireshark helps network administrators to solve protocol issues by diagnosing the problems in the software protocols.
Wireshark is a famous network analysis or packet sniffer tool protocols.
Wireshark examine data from a live network, and can also take a snapshot of the various communications that work on it at another time. Wireshark proposes to see the "dissector tables" directly from the main window. The application can export objects to SMB screen or display the compiled BPF code for capture filters. Finally, Wireshark supports a variety of protocols such as ADwin, Apache Etch, JSON, reload or Wi-Fi P2P (Wi-Fi Direct).
The interface is quite austere, hides an extremely powerful that only experts can use software correctly.
This software is essential for any network administrator to diagnose problems in the software protocols.
# The following bugs have been fixed:
* Wireshark could crash while decrypting Kerberos data.
* Address display filters hang Wireshark. (Bug 658)
* PSML - structure context node missing. (Bug 1564)
* Wireshark doesn't dynamically update the packet list. (Bug 1605)
* LUA: There's no tvb_get_stringz() equivalent. (Bug 2244)
* tvb_new_real_data is prone to memory leak. (Bug 3917)
* Malformed OPC UA traffic makes Wireshark "freeze". (Bug 3986)
* Analyze?Expert... doesn't show IP "Bad Checksum" errors. (Bug 4177)
* Wireshark can't decrypt WPA(2)-PSK when passphrase is 63 bytes. (Bug 4183)
* RTP stream analysis: Wrong jitter values after clicking the refresh button. (Bug 4340)
* Wireshark decodes bootp option 2 incorrectly. (Bug 4342)
* Deleting SMI modules causes Wireshark to crash. (Bug 4354)
* Wireshark decodes kerberos AS-REQ PADATA incorrect. (Bug 4363)
* PDML output from TShark includes invalid characters. (Bug 4402)
* Empty GPRS LLC S frames cause truncated data exception. (Bug 4417)
# New and Updated Features
* Feature parity between the 64- and 32-bit Windows installer has been improved. The 64-bit installer now supports the "matches" operator, GeoIP location, and most types of decryption. Kerberos decryption and OID resolution are still not supported.
# Updated Protocol Support
* BJNP, BOOTP/DHCP, DHCPv6, FIP, GPRS LLC, IEEE 802.11, IP, Kerberos, OPCUA, SCTP, SSL, ZRTP