The world`s foremost network protocol analyzer for Windows

Wireshark (32-bit)

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Wireshark 1.2.1

  -  17.42 MB  -  Open Source
Free Download

Security Status

Sometimes latest versions of the software can cause issues when installed on older devices or devices running an older version of the operating system.

Software makers usually fix these issues but it can take them some time. What you can do in the meantime is to download and install an older version of Wireshark 1.2.1.


For those interested in downloading the most recent release of Wireshark (32-bit) or reading our review, simply click here.


All old versions distributed on our website are completely virus-free and available for download at no cost.


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Download Wireshark 1.2.1

  • Wireshark 1.2.1 Screenshots

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    Wireshark 1.2.1 Screenshot 1
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  • Wireshark 1.2.1 Screenshot 3
  • Wireshark 1.2.1 Screenshot 4
  • Wireshark 1.2.1 Screenshot 5

What's new in this version:

Bug Fixes
- The IPMI dissector could overrun a buffer.
- The AFS dissector could crash.
- The Infiniband dissector could crash on some platforms.
- The Bluetooth L2CAP dissector could crash.
- The RADIUS dissector could crash.
- The MIOP dissector could crash.
- The sFlow dissector could use excessive CPU and memory.

The following bugs have been fixed:
- Wireshark could crash while reading a pcap-ng file.
- Wireshark could crash while reading a PacketLogger file.
- CFLOW decoding is wrong for IPv6 fields.
- Buildbot crash output: fuzz-2009-04-24-2891.pcap.
- packet-dcm, corrupt DICOM export files.
- GeoIP map should use random temporary file nam.
- Wireshark crashes when range_string is the data type.
- Pcap-ng breaks VoIP call data.
- ANSI MAP legInformation BER Error.
- Starting Wireshark Portable 1.2.0 gives error message.
- On Windows, Wireshark could crash on startup.
- The title in the TCP sequence graphs is too short.
- USB Packets in pcap-ng Files Not Dissected Properly.
- 802.11 decryption is broken.
- SMB2 Error Response doesn't decode properly.
- configure.in uses deprecated autoconf test for gnutls detection.
- Radius Malformed Packet error message.
- Wireshark could crash when loading a profile.
- Analyze->Decode as... menu item becomes unavailable.
- btsnoop: Incorrect error message for not supported datalink type.
- Decode error for network-id in BICC BCU-ID.
- IEC 60870-5-104 dissector decodes nothing.
- radius_register_avp_dissector() can stop RADIUS dissector from working correctly.
- ANSI ISUP Cause indicators with coding standard=ANSI fail to dissect.
- Wrong field position in PacketCable Multimedia Extended Classifier.
- FF Protocol "FMS Initiate - Version OD Calling" field packet data not unpacked properly.
- hci_h4: Optimize column/field handling.
- BSSLAP Protocol Not Decoded In BSSMAP-LE Messages.
- Description of tshark -t dd missing from tshark.pod.
- Problem in packet-per.c for ASN.1 PER Encoding.
- [SNMP] Crash when dissecting packet (custom MIB).

New and Updated Features
- There are no new or updated features in this release.

New Protocol Support
- There are no new protocols in this release.

Updated Protocol Support
- AFS, ANSI ISUP, ANSI MAP, ASN.1 PER, Bluetooth HCI H4, Bluetooth L2CAP, BSS CFLOW, COPS, Diameter, DICOM, FF-HSE, ICMPv6, IEC-60870-5-104, IEEE 802.11, Infiniband, IPMI, MIOP, RADIUS, RSVP, sFlow, SNMP, SMB2, ZIOP

New Capture File Support
- Btsnoop, DCT3, Packetlogger, pcap-ng.

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