1. To install I2P, we need to first check whether apt-transport-https and curl are installed:

sudo apt-get install apt-transport-https curl

2. Now we can install the tool using the following command:

apt install i2p

The following screenshot shows the output of the preceding command:

3. When the installation is complete, we can run the service by using the following command:

i2prouter start

4. We should not run it as root so we log in as another account and run the command as shown in the following screenshot:

5. We will see that I2P service is up and running; now we add a proxy to our Firefox on port 4444:

6. We can also access the I2P console at localhost 7657:

And now a whole new world of I2P is open for us to explore.