... Apache HTTP Server Version 2.2 . ... It describes how one can use Apache's mod_rewrite to solve typical URL-based problems with which webmasters are commonly confronted. ... Practical Solutions . ... RewriteCond %{HTTP_HOST} !^fully\.qualified\.domain\.name [NC] RewriteCond %{HTTP_HOST} !^ RewriteCond %{SERVER_PORT} !^ 80$ RewriteRule ^/(.*) http://fully.qualified.domain.name:%{SERVER_PORT}/$1 [L,R] RewriteCond %{HTTP_HOST} !^fully\.qualified\.domain\.name [NC] RewriteCond %{HTTP_HOST} !^ ...