offensive IP Address

I got two suspicious visitors to my website and when I googled their IP a开发者_Python百科ddresses they showed up in one of the offensive IP databases.

Is there a way to prevent any offensive IP address from accessing my website?

Thanks

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To prevent an IP from accessing your site, put this in the top of your document:

if($_SERVER['REMOTE_ADDR'] == '12.34.56.78')
    die('You have been banned.');

Instead if die() you can also use exit to stop the script,
or header('Location: http://www.google.com') to send them to google.

Because there's a good chance they will resort to proxies, it might be better to link this to a database where you can insert all the IP addresses.

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In PHP

$_SERVER['REMOTE_ADDR']

holds the visitors IP-address. You could check that against a list of IP-addresses you'd want to prevent from visiting.

See http://www.php.net/manual/en/reserved.variables.server.php

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You can ban visitors by IP in PHP by using $_SERVER['REMOTE_ADDR'] but if you're using Apache server I suggest HTACEESS way.

Use this pattern in your root folder .htaccess file

order allow,deny
deny from 123.45.6.7
deny from 012.34.5.
allow from all

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You can use .htaccess file to block and IP address. However, as zerkms said, if they really want to get to your site they'll just use a proxy.

http://www.clockwatchers.com/htaccess_block.html