Exercise: Running traceroute

Heads up! You can now install the Terminal on your Windows machine so you can run the same commands as Mac or Linux users: https://www.microsoft.com/en-us/p/windows-terminal/9n0dx20hk701

Open up the Terminal (Mac/Linux), or Command Prompt if you don't have Terminal installed (Windows) and run traceroute on any website you want. Keep in mind that on Windows Command Prompt you will have to run tracert instead of traceroute

For Mac/Linux users you can open the Terminal this way: Instructions

For Windows users you can open the Command Prompt this way: Instructions

For Windows users, to interpret tracert, check out this: https://www.inmotionhosting.com/support/website/how-to/read-traceroute. 

If you see the IP addresses a little bit different than in my videos or the links above: The IP addresses you see may be IPv6. In this case, you will have to run:  tracert -4 google.com  which forces IPv4 hops

If you see ***** (asterisk) in your output: If a packet is not acknowledged within the expected timeout (5seconds), an asterisk is displayed. Sometimes this can be due to your internet connection or traceroute  may show ****  because of widespread use of firewalls and other security practices by the company that owns that server.

Finally, if you have any questions, reach out to our student community in the #helpme channel on Discord (Lecture 2 provides the link if you have not yet joined)!