TCP – 3 WAY HANDSHAKE.

When you type google.com on your web browser what’s going to happen is your computer going to send information from the application layer down to the transport layer and the transport layer going create a segment that called syn and the syn is going to build the session with web server.

 

Every single request that your web browser makes to website will get a unique identifier typically this means that every single web browser session you have opened you have one or more ports opened for that particular web browser and that way the web server replies with the next handshake segment syn-ack 

 Complete the handshake by replying with an ack. and the port will filpflop depending upon who sending the data.

Once our three-way handshake is established only we can exchange the data.

Wire shark Capture for 3 way handshake.