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Web Service

Install Apache​

After updating the repositories, let's install the Apache package

on your remote SSH session:
sudo apt update
sudo apt full-upgrade
sudo apt install apache2

Check that Apache module is running, and that it is listening at least to the port 80 with:

on your remote SSH session:
sudo systemctl status apache2
sudo ss -ltpn

In a separate web browser, visit your IP address or host domain name to see your Apache default page:

Set up Virtual Hosts​

To host different domains or subdomains, create the relevant folder inside the directory /var/www/

on your remote SSH session:
sudo mkdir /var/www/yourdomain

Create a simple webpage inside the folder with the nano editor:

on your remote SSH session:
sudo nano /var/www/yourdomain/index.html

and paste this HTML snippet:

<html>
    <head>
        <title>Welcome to yourdomain!</title>
    </head>
    <body>
        <h1>Success! The yourdomain server block is working!</h1>
    </body>
</html>

Then create a virtual host file with the following configuration block

on your remote SSH session:
sudo nano /etc/apache2/sites-available/yourdomain.conf
<VirtualHost *:80>
    ServerAdmin webmaster@yourdomain.tld
    ServerName yourdomain.tld
    ServerAlias www.yourdomain.tld
    DocumentRoot /var/www/yourdomain
    ErrorLog ${APACHE_LOG_DIR}/error.log
    CustomLog ${APACHE_LOG_DIR}/access.log combined
</VirtualHost>

Then enable the virtual host:

on your remote SSH session:
sudo a2ensite yourdomain.conf

Disable any default host configurations, reload Apache and check that all is OK:

on your remote SSH session:
sudo a2dissite defaultdomains.conf
sudo systemctl reload apache2
sudo apache2ctl configtest

Note the "Not secure" message!

Register for SSL/TLS​

You will surely be interested in offering secure browsing to your visitors, so we install a light certification bot:

on your remote SSH session:
sudo apt install python3-certbot-apache

and set up a certification with:

on your remote SSH session:
sudo certbot --apache -d yourdomain.tld

Now you can refresh the web browser and will see that the website is encrypted:

Your website is now secured!