NameVirtualHost *:80
NameVirtualHost *:443
<VirtualHost *:80>
        ServerAdmin webmaster@mainsiteweb.com
        ServerName www.mainsiteweb.com
        DocumentRoot /var/www/
        <Directory />
                Options FollowSymLinks
                AllowOverride none
        </Directory> 
        <Directory /var/www/>
                RewriteEngine On
                RewriteCond %{HTTPS} !=on
                RewriteRule ^admintech(.*) https://%{SERVER_NAME}/admintech$1 [R,L]
                Options Indexes FollowSymLinks MultiViews 
                AllowOverride All
                Order allow,deny
                allow from all
        </Directory>

        ScriptAlias /cgi-bin/ /usr/lib/cgi-bin/
        <Directory "/usr/lib/cgi-bin">
                AllowOverride none
                Options ExecCGI -MultiViews +SymLinksIfOwnerMatch
                Order allow,deny
                Allow from all
        </Directory>

        ErrorLog /var/log/apache2/error.log

        # Possible values include: debug, info, notice, warn, error, crit,
        # alert, emerg.
        LogLevel warn

        CustomLog /var/log/apache2/access.log combined
        ServerSignature On

    Alias /doc/ "/usr/share/doc/"
    <Directory "/usr/share/doc/">
        Options Indexes MultiViews FollowSymLinks
        AllowOverride None
        Order deny,allow
        Deny from all
        Allow from 127.0.0.0/255.0.0.0 ::1/128
    </Directory>

</VirtualHost>
Include /etc/apache2/sites-enabled/vhosts/*.conf