1. Network Diagnosis Dr. Hwajung Lee
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Innovative Mobile Personalized Accelerated Competency Training (IMPACT) Program

2. Intro
Explain network diagnosis
IMPACT Program

3. Contents Network analyzers ping and traceroute (tracert) commands
show command
Explain a type of interior gateway protocols: RIP, OSPF, IGRP
Explain what NAT, DNS, DHCP, SMTP, AD are and how they work.
Administer a computer network that supports various services such as NAT, DNS, DHCP, SMTP and Active Directory.
IMPACT Program

4. Packet Analyzers Wireshark (https://www.wireshark.org/)
tcpdump (
Ethercap
NetStumber
Ngrep
Ntop
EtherApe

5. Comparison of Packet Analyzers

6. Check Your Understanding
[Question] Select all of the packet analyzers
Wireshark
EtherApe
Ethercap
Tcpdump
ping
Ngrep

7. Check Your Understanding DEBRIEF
[Question] Select all of the packet analyzers
Wireshark
EtherApe
Ethercap
Tcpdump
ping
Ngrep
Answers: all of the above except (e)
Answer the question posed or provide a transition from the Check Your Understanding to the next part of the presentation.
IMPACT Program

8. ping and traceroute (tracert) command
Lab

9. Check Your Understanding
[Question] True/False
The tracert command works using ICMP protocols.
Answer: true
Describe your interaction here. Include feedback for each possible answer choice (if applicable).
IMPACT Program

10. Check Your Understanding DEBRIEF
[Question] True/False
The tracert command works using ICMP protocols.
Answer: true
Answer the question posed or provide a transition from the Check Your Understanding to the next part of the presentation.
IMPACT Program

11. show command

12. Activity
Lab – Answer version

13. Check Your Understanding
[To Tom, Erin, and Greg]
[Question]
What is the appropriate command on a router to display a summary of important information
about the router interfaces?
Answer: show ip interface brief
Describe your interaction here. Include feedback for each possible answer choice (if applicable).
IMPACT Program

14. Check Your Understanding DEBRIEF
[To Tom, Erin, and Greg]
[Question]
What is the appropriate command on a router to display a summary of important information
about the router interfaces?
Answer: show ip interface brief
Answer the question posed or provide a transition from the Check Your Understanding to the next part of the presentation.
IMPACT Program

15. Summary Network analyzers ping and traceroute (tracert) commands
show command
IMPACT Program