How to block specific IP address?

I found an user which visits my site to quickly (his HTTP_USER_AGENT is empty). I would like to ban his ip address to prevent the access to the server.

How can i do that? I am using PHP with mySql and Apache.

 

You need to get or gather the IP address of your visitors to get the Ip:

<?php $ip = $_SERVER['REMOTE_ADDR'];

Code (markup):

if you still don't know what to do, here is the complete code that i always use;

<?php
$ip = $_SERVER['REMOTE_ADDR'];
$ban = array('333.333.333.333','68.225.34.86');
$count = count($ban);
for ($i=0; $i<$count; $i++) {
if($ip == $ban[$i]) { die("I'm sorry, you've been banned. $ip"); }
}
?>

Code (markup):

notice 61.9.18.62. this is the IP to be banned.

 

Thanks, it works for me.
But... is there another method using .htaccess?

 

Yup, like this:

deny from 12.345.78.9

etc...

 

thanks for informations, I have found similar thread.

 

Its better using .htaccess since it bans from the whole site.

 

As there are loads of other suggestion thats why i think this suggestion would be good for you. If you have the root access then you can go for it.

Use Iptables to block an IP with the following command:

Regards