<VirtualHost 192.168.1.101:80>
  ServerName abc.com
  ServerAlias www.abc.com

  RewriteCond %{HTTP_HOST} ^abc.com$ [NC]
  RewriteRule ^(.*)$ http://www.abc.com/$1 [R=301,L]

  ErrorLog /var/log/web/www.abc.com-error-log
  CustomLog /var/log/web/www.abc.com-access-log combined
  <IfModule proxy_module>
  <IfModule proxy_http_module>
    ProxyRequests Off
    <Proxy *>
      Order deny,allow
      Allow from all
    </Proxy>
    ProxyPass / http://www.abc.net/
    ProxyPassReverse / http://www.abc.net/
  </IfModule>
  </IfModule>
</VirtualHost>