In this hands-on project, you view and configure your computer’s route table as well as view and test your routing configuration.
1. Switch to a command-line terminal (tty2) by pressing Ctrl+Alt+F2 and log in to the terminal using the user name of root and the password of secret.
2. At the command prompt, type route and press Enter. What entries are listed? What does each entry represent? What IPv4 address is listed as your default gateway?
3. At the command prompt, type ip route add 1.0.0.0/8 via gwIP and press Enter, where gwIP is the IPv4 address of your default gateway.
4. At the command prompt, type route and press Enter. Is the route added in Step 3 visible? Will this route interfere with traffic that is sent to the 1.0.0.0 network? Explain.
5. At the command prompt, type traceroute ftp.kernel.org and press Enter. How many routers are used to pass your packet to the ftp.kernel.org computer?
6. At the command prompt, type the command cat /proc/sys/net/ipv4/ ip_forward and press Enter. Is your system configured as an IPv4 router? Next, type the command cat /proc/sys/net/ipv6/conf/all/forwarding and press Enter. Is your system configured as an IPv6 router? How many network interfaces at minimum must you have in order to be a router?
7. Type exit and press Enter to log out of your shell.
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