Acronym	Protocol	Transport layer protocol	Port numbers
SMTP	Simple Mail Transport Protocol	TCP	25
HTTP	Hyper text transport protocol	TCP	80
HTTPS	Hyper text transport protocol secure	TCP	443
FTP	File transfer Protocol	TCp	20(DATA) and 21(control or listen then transfer data)
TELNET	TELNET	TCP	23
IMAP	Internet Mail Access protocol	TCP	143
RDP	Remote Desktop protocol	TCP	3389
secure shell	SSH	TCP , UDP	22
DNS	Domain name system	TCP , UDP	53
DHCP	Dyamic host configuration protocol	TCP , UDP	67(Server) , 68(client)