https://www.youtube.com/watch?v=rFw3t2YXa0U  (tcp ζυγουρης)

https://www.youtube.com/watch?v=SLY4Ud53UGs   (tcp vs udp)

https://www.youtube.com/watch?v=xMtP5ZB3wSk   (tcp handsahke)


https://www.youtube.com/watch?v=K4BE4Qf2Uf8   (ποιο τεχνικό)