Wireshark Tutorial – The 3 Way Handshake

 

how TCP establishes the session

type URL and prese ENTER
computer send information from aplication layer down to the transport layer
Transport layer is going to create a segment call SYN

TCP 3 Way Handshake

TCP 3 Way Handshake

SYN build this session with the web server – the way we do that is we send it out on a destination port (web server port:80)
we put a source port up the ephermeral port number or dynamic port number(49182) is randomly chosen port number within a certain range

Every single request  make the web browser will get its unique identifiers so typically this means that for every single web browser session you have open one or more ephemeral port numbers assigned to that particular web browser

TCP 3 Way Handshake