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→Investigation 6: How do I collect the MAC (Hardware) addresses of computers on my network?
{{Admon/note | Use your Fedora Host | Complete this investigation on your Fedora host.}}
{{Admon/note | Obtaining Remote MAC Addresses| The term '''MAC''' address stands for '''Media Access Control''' address, which provides a unique ID to prevent confusion among computer systems within a network. While we use '''32bit IP addresse'''s to communicate over an internetworkinternet, on the local ethernet network packets are delivered to a '''48bit hardware address''' (sometimes called a MAC address). The '''ARP''' protocol resolves 32bit IP addresses to 48bit MAC addresses by using a broadcast and caching the results. We can examine the ARP cache to get the MAC addresses of other computers on our local network.<br /><br />Being able to determine remote MAC address information is useful from troubleshooting networking programs to using '''WOL''' (Wake up on Lan) to automatically boot remote workstations via the network. In this investigation, you will learn how to obtain MAC address information for various network cards.}}
# On the fedora centos host <code>ping</code> each of your VM's
# Examine the contents of the ARP cache by using the command <code>arp</code>
# Check the contents of the cache again by using the command <code>arp -n</code>
# What was the difference in output? For what other command did -n have a similar effect?
'''Answer the Investigation 6 observations / questions in your lab log book.'''
=== Investigation 7: How can I see what network services or ports are active on my Fedora system? ===
