• Install apache2

sudo apt-get install apache2

• Activate module and website

sudo a2ensite default-ssl
sudo a2enmod ssl

• Restart apache

sudo /etc/init.d/apache2 restart

• Generate self-signed certificates

sudo mkdir /etc/apache2/ssl
sudo /usr/sbin/make-ssl-cert /usr/share/ssl-cert/ssleay.cnf /etc/apache2/ssl/apache.crt

• In the last command put the name of your server.
• The create the two files out of the crt file

cd /etc/apache2/ssl
sudo cp apache.crt apache.pem
sudo cp apache.crt apache.key

• Edit this files and only leave the certificate key in the .pem file and the private key in the .key file
• Then edit /etc/apache2/sites-available/defaul-ssl and change to this:

SSLCertificateFile /etc/apache2/ssl/apache.pem
SSLCertificateKeyFile /etc/apache2/ssl/apache.key

• Change permissions of the private key

sudo chmod 600 /etc/apache2/ssl/apache.key

• Restart again

sudo /etc/init.d/apache2 restart

• Disable http port. Edit /etc/apache2/ports.conf and comment:

#NameVirtualHost *:80
#Listen 80