Wisely Created Linux, Network, Programming Tutorial
TCP port 21 was one of the most popular port in the early days of the internet. TCP 21 is used by the FTP or File Transfer Protocol y default. FTP is one of the oldest protocols created for the internet. The TCP port 21 is used to control FTP protocol between client and server. … Read more
FTP or File Transfer Protocol is a network protocol used to transfer (upload and download) files and folders via a network. The FTP uses network sockets for communication. FTP is implemented in the TCP protocol for reliability and security. The FTP uses TCP port number 21 in order to start and control FTP transmission. But … Read more