HTTP works over a TCP connection.HTTP works over a TCP connection.HTTP works over a TCP connection.HTTP works over a TCP connection.
smtp
FTP; HTTP; DNS (uses both TCP and UDP); several e-mail protocols including POP3, SMTP, IMAP4.
TCP (also sometimes called TCP/IP)
HTTP is implemented on top of TCP.
WebDAV uses HTTP over TCP to transfer files.
HTTP
TCP port 80
HTTP shows us images and allows stuff like what we are doing here. My FTP site is for you to enter my machine and collect data that I allow you to.
Try opening these ports: TCP 80 (http) TCP 18182 TCP 52000 - 53800 UDP 52000 - 53800
smtp, http, anything on that specific OSI layer.
UDP: DNS, TFTP, DHCP... TCP: SMTP, HTTP, HTTPS, DNS, FTP, SHH, Telnet...