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
What’s new in Wireshark 4.0.1:
- The Windows installers now ship with Qt 5.12.2. They previously shipped with Qt 6.2.3.
The following bugs have been fixed:
- Comparing a boolean field against 1 always succeeds on big-endian machines. Issue 12236.
- Qt: MaxMind GeoIP columns not added to Endpoints table. Issue 18320.
- Fuzz job crash output: fuzz-2022-10-04-7131.pcap. Issue 18402.
- The RTP player might not play audio on Windows. Issue 18413.
- Wireshark 4.0 breaks display filter expression with > sign. Issue 18418.
- Capture filters not working when using SSH capture and dumpcap. Issue 18420.
- Packet diagram field values are not terminated. Issue 18428.
- Packet bytes not displayed completely if scrolling. Issue 18438.
- Fuzz job crash output: fuzz-2022-10-13-7166.pcap. Issue 18467.
- Decoding bug H.245 userInput Signal. Issue 18468.
- CFDP dissector doesn’t handle \"destination filename\" only. Issue 18495.
- Home page capture button doesn’t pop up capture options dialog. Issue 18506.
- Missing dot in H.248 protocol name. Issue 18513.
- Missing dot for protocol H.264 in protocol column. Issue 18524.
- Fuzz job crash output: fuzz-2022-10-23-7240.pcap. Issue 18534.
Removed Features and Support
- The experimental display filter syntax for literals using angle brackets that was introduced in Wireshark 4.0.0 has been removed. For byte arrays a colon prefix can be used instead. See the User’s Guide for details.
Updated Protocol Support
- ASN.1 PER, CFDP, Diameter, DirectPlay, F5 Ethernet Trailer, GTP, H.223, H.248, H.264, H.265, IEEE 802.11, IPv4, MBIM, O-RAN FH CUS, PFCP, RTCP, SCTP, SMB, TCP, and TRANSUM
New and Updated Capture File Support
Download: Wireshark 4.0.1 | 75.0 MB (Open Source)
Download: Portable Wireshark 4.0.1 | Wireshark for macOS
View: Wireshark Website
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