Apache rewrite subnet ip range

Question

Can someone please tell me how to put the following IP ranges (belongs to Cloudfront) in a mod_rewrite? I am looking to redirect the non-www requests for example.com to www.exam

Answer 1

If you're using Apache HTTPD 2.4 or later, you can also use expressions to match REMOTE_ADDR against a CIDR mask directly, instead of converting these to regexps.

The short form looks like this:

RewriteCond expr "-R '192.168.1.0/24'"

The following longer form is also available, but the documentation suggests it is less efficient:

RewriteCond expr "%{REMOTE_ADDR} -ipmatch '192.168.1.0/24'"