You have been called in to troubleshoot a client’s computer, which is unable to connect to the local area network. What command would you use to check the configuration? What information would you look for?
FIGURE 1-6 The arp command in Linux
01-ch01.indd 16 24/07/14 5:00 PM
Lab 1.1l: Linux Client Configuration 17
Lab Manual / Principles of Computer Security Lab Manual, Fourth Edition / Nestler / 655-1 / Chapter 1
2. You have been called in to troubleshoot a client’s computer, which is able to connect to the local area network but unable to connect to any other network. What command would you use to check the configuration? What information would you look for?
3. If you needed to obtain a user’s MAC address as well as the user’s network configuration information, what command and switch would you enter?
4. To use the Windows GUI utility to adjust IP settings, including DNS and gateway information, what steps would you take?
5. You have just pinged a remote computer. You would now like to retrieve the MAC address of the remote computer locally. How would you obtain the remote computer’s MAC address?
6. You are about to run some network traffic analysis tests. You need to clear your ARP cache. How would you go about performing this task (for Windows and Linux)?
7. What information does ping return to the user?
8. How does a computer ensure that the replies it gets from an ARP broadcast are correct?