Wireshark is a GTK+-based network protocol analyzer that lets you capture and interactively browse the contents of network frames. The goal of the project is to create a commercial-quality analyzer for Unix and Win32 and to give Wireshark features that are missing from closed-source sniffers. This is the source code release.
You can download it from the following link: https://packetstormsecurity.com/files/download/165968/wireshark-3.6.2.tar.xz
Source: https://packetstormsecurity.com/files/165968/Wireshark-Analyzer-3.6.2.html