Session Layer - Establishes and maintains a session between devices.Uses protocols like TCP and UDP to send and receive data. Transport Layer - Acts as a bridge between the network and session layer.
Sender’s and receiver’s IP addresses are added to the header at this layer.
Wireshark is also completely open-source, thanks to the community of network engineers around the world. Most enterprises and government organizations now prefer Wireshark as their standard network analyzer. It can run on all major operating systems. Wireshark was first released in 1998 (and was called Ethereal back then). It lets you dissect your network packets at a microscopic level, giving you in-depth information on individual packets. Wireshark is a network analyzer that lets you see what’s happening on your network. In this article, we will look at it in detail. Wireshark is the best network traffic analyzer and packet sniffer around.