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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
Wireshark 4.6.1 changelog:
- wnpa-sec-2025-05 BPv7 dissector crash. Issue 20770.
- wnpa-sec-2025-06 Kafka dissector crash. Issue 20823.
The following bugs have been fixed:
- L2CAP dissector doesn’t understand retransmission mode. Issue 2241.
- DNS HIP dissector labels PK algorithm as HIT length. Issue 20768.
- clang-cl error in "packet-zbee-direct.c" Issue 20776.
- Writing to an LZ4-compressed output file might fail. Issue 20779.
- endian.h conflics with libc for building plugins. Issue 20786.
- TShark crash caused by Lua plugin. Issue 20794.
- Wireshark stalls for a few seconds when selecting specific messages. Issue 20797.
- TLS Abbreviated Handshake Using New Session Ticket. Issue 20802.
- Custom websocket dissector does not run. Issue 20803.
- WINREG QueryValue triggers dissector bug in packet-dcerpc.c. Issue 20813.
- Lua: FileHandler causing crash when reading packets. Issue 20817.
- Apply As Filter for field with FT_NONE and BASE_NONE for a single byte does not use the hex value. Issue 20818.
- Layout preference Pane 3 problem with selecting Packet Diagram or None. Issue 20819.
- TCP dissector creates invalid packet diagram. Issue 20820.
- Too many nested VLAN tags when opening as File Format. Issue 20831.
- Omnipeek files not working in 4.6.0. Issue 20842.
- Support UTF-16 strings in the IsoBus dissector for the string operations. Issue 20845.
- SNMP getBulkRequest request-id does not get filtered for correctly. Issue 20849.
- Fuzz job issue: fuzz-2025-11-12-12064814316.pcap. Issue 20852.
- UDP Port 853 (DoQ) should be decoded as QUIC. Issue 20856.
Updated Protocol Support
- 802.11 Radiotap, AC DR, ASN.1 BER, ASN.1 PER, BPv7, BT L2CAP, CFM, Darwin, DNS, DTLS, EAPOL-MKA, HTTP, HTTP3, ISObus VT, KRB5, LTP, NAS-EPS, NETDFS, NMEA 0183, P1, RPC_NETLOGON, RTSE, SGP.22, SGP.32, SMB, SNMP, TCP, TECMP, TFTP, VLAN, WINREG, X509AF, X509SAT, and ZBD
New and Updated Capture File Support
- Peektagged
Download: Wireshark 4.6.1 | 91.4 MB (Open Source)
Download: Portable Wireshark 4.6.1 | ARM64 Installer
View: Wireshark Website | Screenshot
Download: Portable Wireshark 4.6.1 | ARM64 Installer
View: Wireshark Website | Screenshot