2 <Directory /var/www/acme>
 
   6         # Allow follow symlinks (required by php or rewrite)
 
  13 <IfModule rewrite_module>
 
  14         # Start rewrite engine
 
  17         # Only if https is disabled
 
  18         RewriteCond %{HTTPS} off
 
  20         # Rewrite acme uri on php script
 
  21         RewriteRule /\.well\-known/acme\-challenge/([-_a-zA-Z0-9]+) /var/www/acme/acme-challenge.php?key=$1 [L]