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Lecture TCP-IP protocol suite - Chapter 20: File Transfer Protocol (FTP)

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Upon completion you will be able to: Understand the connections needed for FTP file transfer be familiar with FTP commands and responses know the differences between FTP and TFTP be familiar with TFTP message types understand TFTP flow and error control.

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Nội dung Text: Lecture TCP-IP protocol suite - Chapter 20: File Transfer Protocol (FTP)

  1. Chapter 20 File Transfer Protocol (FTP) McGraw­Hill ©The McGraw­Hill Companies, Inc., 2000
  2. CONTENTS •  CONNECTIONS •  COMMUNICATION •  COMMAND PROCESSING •  FILE TRANSFER •  USER INTERFACE •  ANONYMOUS FTP McGraw­Hill ©The McGraw­Hill Companies, Inc., 2000
  3. FTP uses the services of TCP. It needs two TCP connections. The well-known port 21 is used for the control connection and the well-known port 20 for the data connection. McGraw­Hill ©The McGraw­Hill Companies, Inc., 2000
  4. Figure  20­1 FTP McGraw­Hill ©The McGraw­Hill Companies, Inc., 2000
  5. 20.1 CONNECTIONS McGraw­Hill ©The McGraw­Hill Companies, Inc., 2000
  6. Figure  20­2 Opening the control connection McGraw­Hill ©The McGraw­Hill Companies, Inc., 2000
  7. 20.2 COMMUNICATION McGraw­Hill ©The McGraw­Hill Companies, Inc., 2000
  8. Figure  20­3 Creating the data connection McGraw­Hill ©The McGraw­Hill Companies, Inc., 2000
  9. Figure  20­4 Using the control connection McGraw­Hill ©The McGraw­Hill Companies, Inc., 2000
  10. Figure  20­5 Using the data connection McGraw­Hill ©The McGraw­Hill Companies, Inc., 2000
  11. 20.3 COMMAND PROCESSING McGraw­Hill ©The McGraw­Hill Companies, Inc., 2000
  12. Figure  20­6 Command processing McGraw­Hill ©The McGraw­Hill Companies, Inc., 2000
  13. 20.4 FILE TRANSFER McGraw­Hill ©The McGraw­Hill Companies, Inc., 2000
  14. Figure  20­7 File transfer McGraw­Hill ©The McGraw­Hill Companies, Inc., 2000
  15. Example 1 Figure 20.8 shows an example of using FTP for retrieving a list of items in a directory. McGraw­Hill ©The McGraw­Hill Companies, Inc., 2000
  16. Figure  20­8 Example 1 McGraw­Hill ©The McGraw­Hill Companies, Inc., 2000
  17. Example 2 Figure 20.9 shows an example of how an image (binary) file is stored. McGraw­Hill ©The McGraw­Hill Companies, Inc., 2000
  18. Figure  20­9 Example 2 McGraw­Hill ©The McGraw­Hill Companies, Inc., 2000
  19. 20.5 USER INTERFACE McGraw­Hill ©The McGraw­Hill Companies, Inc., 2000
  20. Example 3 We show some of the user interface commands that accomplish the same task as in Example 1. McGraw­Hill ©The McGraw­Hill Companies, Inc., 2000
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