# Rediriger les visiteur vers une page offline, sauf admin
RewriteEngine on
RewriteCond %{REMOTE_ADDR} !^123\.456\.789\.012$
RewriteRule ^/(.*) /offline.html$1
Consider below url. http://site.com/showtopic.php?id=10 By seeing this url we can understand that this site is developed using php, and we can understand coding/database table upto some extent.