Banning IP

[zzz]

Is there a good way of banning a particular IP address from the site if I suspect unfriendly snooping around? Perhaps the's a class already written that I could use? Without putting extra load on server obviously... just checking.

[bradmasterx]

to ban an ip you can do:

<?php
$banned_ip = array();
$banned_ip[] = '000.000.000.000';

foreach($banned_ip as $banned) { 

$userip = $_SERVER['REMOTE_ADDR'];

if($userip == $banned){ 

    echo "You have been banned! Sorry! <a href=\"javascript:history.go(-1);\">Go to previous page.</a>";
    die();
} 
} 

// this has to be the head ofyour page, put your script below
?>

Or a mysqli (i = improved in PHP5) in a table :

CREATE TABLE `bannedip` (
`IP` VARCHAR( 20 ) NOT NULL ,
`reason` VARCHAR( 250 ) NOT NULL
) ENGINE = innodb;

The php:

<?php
$cxn = mysqli_connect("HOST", "USER", "PASS", "DB") or die ("Sorry notice");
$userip=$_SERVER['REMOTE_ADDR'];
$sql="SELECT * FROM `bannedip` WHERE ip='$ip' ";
$result = mysqli_query($cxn, $sql) or die ("Sorry, Query did not execute.");
@$num = mysqli_num_rows($result);
if($num > 0){
$row = mysqli_fetch_assoc($result);
$reson=$row['reason'];
echo "Sorry you have been banned (for: $reason).";
echo "<p> <a href=\"javascript:history.go(-1);\">Go Back</a> </p>";
}
?>

[MarkR]

You should probably ban it either in your web server configuration, or in your firewall. This is almost certainly more efficient and easier than doing it in PHP.

Mark

[bradmasterx]

Firewall, say he is on a host like x10hosting.com then he may need to do it through php not cpannel as it hasn't that option PHP RULES.

[bradgrafelman]

I agree with MarkR - if the intention is to stop unwanted traffic, at the very least you could use a .htaccess file in the root of your website:

Order allow,deny
Allow from all
Deny from 123.45.67.89