There are various setups that will cause the remote_addr
to be the local machine (127.0.0.1). Most that I've seen
will set some other environment variable before overwriting
$ENV{REMOTE_ADDR}, You might try $ENV{HTTP_PROXY}
$ENV{FORWARDED_FOR} or $ENV{X_HTTP_FORWARD}. Since it
varies between systems, my advice would be to just dump
your %ENV and take a look, like so:
print "$_ => $ENV{$_}\n" for (keys %ENV);
-Blake