FTP Port: File Transfer and Port Numbers

FTP is an unusual service in that it utilizes two ports, a 'data' port and a 'command' port (also known as the control port). Traditionally these are port 21 ...

The File Transfer Protocol (FTP) is a standard communication protocol used for the transfer of computer files from a server to a client on a computer ...

Standard FTP ports can be ports 20 and 21 since FTP was officially assigned both. Port 21 is referred to as a controlled port, while port 20 is the data port.

2020年9月23日 — An FTP port is a communication endpoint. Ports allow the connection and transfer of data to happen between your computer and a server.

File Transfer Protocol (FTP) 是一種client server 架構的檔案傳輸協定，使用者可以不用登入server 下，傳輸檔案。 · FTP 使用多個ports， FTP 開始連接時使用server port ...

2022年8月16日 — FTP uses control and data channels, each using a separate TCP port. Port 21 is for the control channel, and port 20 is for the data channel.

2023年7月6日 — FTP ports are used to identify the apps and services that you want to access on the server. The port will use numbers from 0 to 65535 for this.

2022年12月14日 — The data connection uses the FTP port 20. FTP default port number is 21 to specify the control connection. You can change the standard FTP port ...

2021年9月8日 — FTP在使用上會用到兩個port：. data port; command port (或叫做control port). 一般來說server端的port 21通常是command port，而port 20是data port，但 ...