... Directives | ... Apache HTTP Server Version 2.4 . ... It describes perhaps one of the most important concepts about mod_rewrite - namely, when to avoid using it. mod_rewrite should be considered a last resort, when other alternatives are found wanting. ... Using RewriteMap . ... Note that whether you use RewriteRule or ProxyPass , you'll still need to use the ProxyPassReverse directive to catch redirects issued from the back-end server: ProxyPassReverse /images/ http://imageserver.local/images/ . ...