Wireshark

world’s foremost and widely-used network protocol analyzer

Wireshark

wireshark.org

https://www.wireshark.org/

Resources

Wireshark Tutorial for BEGINNERS // Where to start with Wireshark - YouTube

youtube.com

https://www.youtube.com/watch?v=OU-A2EmVrKQ

Learn Wireshark in 10 minutes - Wireshark Tutorial for Beginners - YouTube

youtube.com

https://www.youtube.com/watch?v=lb1Dw0elw0Q