In order to successfully complete this course, you will need:

• a DigitalOcean (DO) account, as this simple technique relies on a Floating IP service. The principles we talk here about may work with others providers' infrastructure, but in this course we are going to use DigitalOcean as a service provider.
• I should warn you here, that DO services are not free, and you need to pay for the servers we will need to rent in order to complete the course! We will need two servers $5 a month each. But to get familiar with the technique, you will need the servers for 1-2 days only, and note that you are free to delete the servers after that and don't pay for extra rent time. So you can limit extra expenses to less than a dollar ($1). I will share my affiliate link with you, so that you'll get a bonus $10 to your account; it's not about making extra money, I just want you to get more services for your money, and it's totally up to you whether you use it or not.
• In general. it will be great if you are familiar with basic Linux administration and basic command line utilities, but if your're not, you are still good to go as we will go through all the commands, inputs and configs.