Wireshark is the world's foremost and widely-used network protocol analyzer. It lets you see what's happening on your network at a microscopic level and is the de facto (and often de jure) standard across many commercial and non-profit enterprises, government agencies, and educational institutions. Wireshark development thrives thanks to the volunteer contributions of networking experts around the globe and is the continuation of a project started by Gerald Combs in 1998.

Features

  • 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, macOS, 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: tcpdump (libpcap), Pcap NG, Catapult DCT2000, Cisco Secure IDS iplog, Microsoft Network Monitor, Network General Sniffer (compressed and uncompressed), Sniffer Pro, and NetXray, Network Instruments Observer, NetScreen snoop, Novell LANalyzer, RADCOM WAN/LAN Analyzer, Shomiti/Finisar Surveyor, Tektronix K12xx, Visual Networks Visual UpTime, WildPackets EtherPeek/TokenPeek/AiroPeek, and many others
  • 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 platform)
  • 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

The following bugs have been fixed:

  • Renegotiated DTLS session is not being decrypted. Issue 20362.
  • Wireshark is completely stuck in initialization because androiddump recv() is blocked. Issue 20526.
  • Fuzz job UTF-8 encoding issue: fuzz-2025-06-20-7318.pcap. Issue 20585.
  • Crash when showing packet in new window after reloading Lua plugins with a certain gui.column.format preference. Issue 20588.
  • Bug in UDS dissector with Service ReadDataByPeriodicIdentifier Response. Issue 20589.
  • Packet diagram doesn't show non-standard field value representations. Issue 20590.
  • Packet diagram shows representation twice when field type is FT_NONE. Issue 20601.
  • application/x-www-form-urlencoded key parsed incorrectly following a name-value byte sequence with no '=' Issue 20615.
  • DNP3 time stamp was unable to work after epoch time(year 2038) Issue 20618.