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- Now, let's test if our Ubuntu router host

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is forwarding the packets properly.

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I'm back to our Ubuntu host.

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Type nslookup,

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space and a well-known domain name

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such as

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worldwideweb.microsoft.com.

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Press enter.

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Issuing an nslookup command

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and getting a response like this

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means that you have the internet connection.

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Another surefire way to check

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is through pinging

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the network interfaces.

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The ultimate test is to ping the external network interface

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of the Ubuntu router host,

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whose IP is 10.0.0.6

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from the Ubuntu host network interface,

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whose IP is 10.0.1.4.

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Type ping,

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10.0.0.6.

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Press enter.

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The ping command works,

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which means that the Ubuntu router host

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is forwarding the packets properly.

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Congratulations.