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Tip of the Day
Language: CGI and Perl
Expertise: Beginner
May 9, 2003

WEBINAR:

On-Demand

Application Security Testing: An Integral Part of DevOps


A Better Way to Stop an IP Address From Accessing Your Site

A more elegant approach: use an associative array. If you have more addresses to block, put them together (in this example, using CGI and Perl):

#!perl
my %block_ip=(
'172.56.260.71'=>'bad.org',
'172.56.260.72'=>'evil.org',
);
my $remote = $ENV{REMOTE_ADDR} || '';
print "Status: 302 Moved\nLocation: notallowed.asp\n\n" if
($block_ip{$remote});
Ben Blazke
 
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