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====== apache2 + ssl + debian + virtual hosts ======

  * 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

  * To have virtual hosts in ssl create a map file /etc/apache2/ssl_map with the server names and their respective document roots:

  www.example.com   /var/www
  wiki.example.com  /usr/share/dokuwiki

  * To the file /etc/apache2/sites-available/default-ssl inside the VirtualHost section add the following lines:

  ### Mass SSL Vhosts ###
  RewriteEngine on
  
  #   define two maps: one for fixing the URL and one which defines
  #   the available virtual hosts with their corresponding
  #   DocumentRoot.
  RewriteMap    lowercase    int:tolower
  RewriteMap    vhost        txt:/etc/apache2/ssl_map
  
  #   1. make sure we don't map for common locations
  RewriteCond   %{REQUEST_URI}  !^/cgi-bin/.*
  RewriteCond   %{REQUEST_URI}  !^/icons/.*
  
  #   2. make sure we have a Host header
  RewriteCond   %{HTTP_HOST}  !^$
  
  #   3. lowercase the hostname
  RewriteCond   ${lowercase:%{HTTP_HOST}|NONE}  ^(.+)$
  #
  #   4. lookup this hostname in vhost.map and
  #      remember it only when it is a path
  #      (and not "NONE" from above)
  RewriteCond   ${vhost:%1}  ^(/.*)$
  
  #   5. finally we can map the URL to its docroot location
  #      and remember the virtual host for logging puposes
  RewriteRule   ^/(.*)$   %1/$1  [E=VHOST:${lowercase:%{HTTP_HOST}}]

  * We need the rewrite module:

  sudo a2enmod rewrite

  * Restart apache2 and voila!