OSI Model
TCP/UDP is on Transport Layer. Ethernet is on Data Link Layer. HTTP,FTP and many others are on Application Layer. Presentation Layer and Session Layer are mainly outdated. Ports belong to Transport Layer.
About Author
I am Mathias from Heidelberg, Germany. I am a passionate IT freelancer with 15+ years experience in programming, especially in developing web based applications for companies that range from small startups to the big players out there. I create Bosycom and initiated several software projects.