Wireshark is popular tool for network protocol analysis used by education institutions and in the industry. It offers both terminal and graphical user interfaces and both are available on Fedora. You can use it either for real-time network analysis or to inspect files with captured traffic such as pcap files.
For many years, the primary framework for the graphical user interface (GUI) used to be GTK, but since version 2.0, Qt became the framework of a choice. Nevertheless the old GUI is still available and you can choose which one you want to use.