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lib/Apache/ForwardedFor.pm  view on Meta::CPAN

  PerlSetVar  ForwardedForAccept 192.168.1.1
  PerlAddVar  ForwardedForAccept 192.168.1.2

=head1 DESCRIPTION

We often want to run Apache behind a reverse proxy so that we
can delegate light-weight (static content) requests to a small
httpd and proxy heavy-weight requests (dynamic mod_perl generated
content) to a big httpd. This is a well known technique to overcome
the memory contraints of running a busy mod_perl site.

A small problem when doing this is that our "remote_ip" for the
backend (mod_perl) httpd is that of the front-end proxy'ing httpd.
This is not a good representation of the end client's real IP
address - making it difficult to implement IP-based access control
and tracking usage through your logs.

Before: 

 +--------+     +-------------+     +----------------+