What is Wireshark?
Wireshark is the world’s most popular network protocol analyzer. It is used for troubleshooting, analysis, development and education.
What’s New
Bug Fixes
The following vulnerabilities have been fixed:
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wnpa-sec-2020-20 QUIC dissector crash Bug 17073.
The following bugs have been fixed:
New and Updated Features
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IETF QUIC TLS decryption errors when packets are coalesced with random data Bug 16914.
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QUIC: missing dissection of some coalesced SH packets Bug 17011.
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macos-setup.sh can’t find SDK on macOS Big Sur, as it went to 11 Bug 17043.
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Mapping endpoints in browser ⇒ Map file error Bug 17074.
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Wireshark 3.4.1 hangs on startup on macOS Big Sur 11.0.1 Bug 17075.
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False expect error seen on FCoE frames (not seen with older release wireshark 1.2.18) Bug 17084.
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Several libraries missing in 3.4.1 and 3.2.9 installers for macOS Bug 17086.
New Protocol Support
There are no new protocols in this release.
Updated Protocol Support
DOCSIS, FC-dNS, FC-SWILS, FCoE, QUIC, SNMP, and USBHID
New and Updated Capture File Support
There is no new or updated capture file support in this release.
Getting Wireshark
Wireshark source code and installation packages are available from https://www.wireshark.org/download.html.
Vendor-supplied Packages
Most Linux and Unix vendors supply their own Wireshark packages. You can usually install or upgrade Wireshark using the package management system specific to that platform. A list of third-party packages can be found on the download page on the Wireshark web site.
File Locations
Wireshark and TShark look in several different locations for preference files, plugins, SNMP MIBS, and RADIUS dictionaries. These locations vary from platform to platform. You can use About → Folders to find the default locations on your system.
Getting Help
The User’s Guide, manual pages and various other documentation can be found at https://www.wireshark.org/docs/
Community support is available on Wireshark’sQ&A site and on the wireshark-users mailing list. Subscription information and archives for all of Wireshark’s mailing lists can be found on the web site.
Issues and feature requests can be reported on the issue tracker.
Frequently Asked Questions
A complete FAQ is available on the Wireshark web site.