FTP- File Transfer Protocol

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The File Transfer Protocol (FTP) is a standard network protocol used to transfer computer files between a client and server on a computer network.
  • TCP Control use 20 ports
    • Commands share by TCP control between the computer.
  • Data Connection use 21 ports
    • File is send by the Data connections.

Functions:
  1. RETR
  2. STORE
  3. LIST
Response message:
  1. 331: Username is OK
  2. 125: Data Connection open
  3. 425: Can't open Connection
  4. 452: Error 
Tool:
Filezila is the tool which is use the FTP and file share between the computers.

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