正在加载图片...
Answer the following questions: 5.What is the IP address of your host?What is the IP address of the target destination host? 6.If ICMP sent UDP packets instead (as in Unix/Linux),would the IP protocol number still be 01 for the probe packets?Ifnot what would it be? 7.Examine the ICMP echo packet in your screenshot.Is this different from the ICMP ping qury packets in the first half of this lab?Ifyes,how so? 8. nshot It has s more fields than the ICMP echo those fields? 9. ICMP ed by he source host.How are these packe why ar they differ nger than o e delay is significa ers Figure 4,is there a link whose delay is significantly longer than others?On the basis of the router names,can you guess the location of the two routers on the end of this link? 3.Extra Credit ICMP probe packets.Use the client program to send a UDP packet with an unusual destination port number to some live host.At the same time,use Wireshark to capture any response from the target host.Provide a Wireshark screenshot for the response as well as an analysis of the response.Answer the following questions: 5. What is the IP address of your host? What is the IP address of the target destination host? 6. If ICMP sent UDP packets instead (as in Unix/Linux), would the IP protocol number still be 01 for the probe packets? If not, what would it be? 7. Examine the ICMP echo packet in your screenshot. Is this different from the ICMP ping query packets in the first half of this lab? If yes, how so? 8. Examine the ICMP error packet in your screenshot. It has more fields than the ICMP echo packet. What is included in those fields? 9. Examine the last three ICMP packets received by the source host. How are these packets different from the ICMP error packets? Why are they different? 10. Within the tracert measurements, is there a link whose delay is significantly longer than others? Refer to the screenshot in Figure 4, is there a link whose delay is significantly longer than others? On the basis of the router names, can you guess the location of the two routers on the end of this link? 3. Extra Credit For one of the programming assignments you created a UDP client ping program. This ping program, unlike the standard ping program, sends UDP probe packets rather than ICMP probe packets. Use the client program to send a UDP packet with an unusual destination port number to some live host. At the same time, use Wireshark to capture any response from the target host. Provide a Wireshark screenshot for the response as well as an analysis of the response
<<向上翻页
©2008-现在 cucdc.com 高等教育资讯网 版权所有