Hi Tamir Basin,
Thank you for your reaching out to us on Microsoft Q&A forum.
From your question we understand that you are trying to complete the exercise from Describe Azure compute and networking services.
We had tried to perform the exercise and successfully completed it from our side.

When we run the following command (curl --connect-timeout 5 http://$IPADDRESS)

The URL is displaying the below the image:
We suggest you start the lab from the beginning and complete the steps as mentioned in the exercise. Wait for each command in the exercise to execute completely.
Please don't hesitate to reach out to us if you have any other queries with screenshots of the error.
If the information is helpful, please Accept Answer so that it would be helpful to community members.
Thank you.