Now that we have some packets, let's break out Wireshark for analysis. sudo apt install wireshark Open the .pcap file with Wireshark. sudo wireshark linuxjournal.pcap Filter the traffic for TCP only.

In this paper, the authors purpose to analysis packets of TCP and UDP while sending an e-mail using a tool called wireshark. Wireshark is a free and open-source packet analyzer.

Scott Reeves shares the wireshark filters that helps you isolate TCP and UDP traffic.