explanation in video seems correct , but diagrams are wrong, In 1st SYN, only SYN flag should be set, not ACK. and in last ACK, SEQ Number should be 8001
Active OPEN: A client process using TCP takes the “active role” and initiates the connection by actually sending a TCP message to start the connection (a SYN message). Passive OPEN: A server process designed to use TCP, however, takes a more “laid-back” approach. It performs a passive OPEN by contacting TCP and saying “I am here, and I am waiting for clients that may wish to talk to me to send me a message on the following port number”. The OPEN is called passive because aside from indicating that the process is listening, the server process does nothing.
