Do you have access to the webserver configuration? Like being able to tell apache via httpd.conf to .. 

Order Deny,Allow
Deny from all
Allow from myservername.here.com
Allow from localhost

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Would seem to obviate the need for any IP sec logic in your code

Update:Of course if you MUST do it with the script, for instance to display a 'friendly' warning rather than a 500 Forbidden, using the CGI query object from CGI.pm you can... 

my $q = CGI->new();
my $remote_host = $q->remote_host();

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I can't believe it's not psellchecked

In reply to Re: CGI IP Based Security by submersible_toaster
in thread CGI IP Based Security by devslashneil

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