htaccess request forwarding if internal ip

Question

Is there a possible htaccess directive that can transparently forward request from index.php to index_internal.php if the request is coming from an internal ip range?

Answer 1

RewriteEngine on

RewriteCond %{REMOTE_ADDR} ^192\.168\.1\. [OR]
RewriteCond %{REMOTE_ADDR} ^10\.15\.
RewriteRule ^index\.php$ index_internal.php [R,NC,QSA,L]

What this does:

start mod_rewrite engine (you may have that already)

if (client IP address starts with "192.168.1." [or]

client IP address starts with "10.15.")

and page name is index.php ([n]ot [c]ase sensitive), [r]edirect to index_internal.php, [q]uery [s]tring [a]ppend (i.e. index.php?foo=bar becomes index_internal.php?foo=bar), [l]eave processing.

Modify as needed for IP address blocks.