Chapter19 - CHAPTER 19 File Transfer: FTP and TFTP...

Info iconThis preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon
1 CHAPTER 19 File Transfer: FTP and TFTP Exercises 1. If the control connection is accidentally severed during an FTP transfer, there would be no problem until the data transfer completed and the client attempted to send another command. 3. There should be limitations on anonymous FTP because it is unwise to grant the public complete access to a system. If the commands that an anonymous user could use were not limited, that user could do great damage to the file system (e.g., erase it completely). 5. See Figure 19.1. 7. See Figure 19.2. Figure 19.1 Exercise 5 5 "C" "O" "M" "M" "A" "N" "D" " " "a" "r" "g" "u" "m" "s" "e" CR LF "n" "t" Ephemeral port number 21 Sequence number Acknowledgment number Reserved Flags Window size Checksum Urgent Pointer
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
SECTION 2 9. See Figure 19.3. 11. See Figure 19.4. 13. See Figure 19.5 Figure 19.2 Exercise 7 Figure 19.3 Exercise 9 5 Ephemeral port number 20 Sequence number Acknowledgment number Reserved Flags Window size Checksum DATA Urgent Pointer Client Server 220 (Service ready) USER forouzan QUIT LIST /usr/user/reports PASS xxxx
Background image of page 2
Image of page 3
This is the end of the preview. Sign up to access the rest of the document.

Page1 / 6

Chapter19 - CHAPTER 19 File Transfer: FTP and TFTP...

This preview shows document pages 1 - 3. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online