[PHP] IP Banner

[i386]

If you are looking to ban a few IPs, try this.

if (strcasecmp(getenv("REMOTE_ADDR"), "someIP") == 0)
{
  echo "You have been banned.\n";
  exit;
}

 

[vip-ip]

Hmm, nice! But you'll have to have that for every single IP and you can't ban an IP rande in 1 line.

 

[Porte]

Well yea, it's better through cpanel though. But I think this is good for banning a few IPs.

 

[i386]

You could also use strstr

if (strstr(getenv("REMOTE_ADDR"), "1.2.3.4") != FALSE)
{
  banned
}

 

[Eric]

Possibly this would work better: Allows the ban of multiple IPs, one per line.

//Place this at the top of your php scripts/HTML to prevent access to those IP addresses listed.
<?php
$ip_ban = array();
$ip_ban[] = '111.111.111.111';
$ip_ban[] = '111.111.111.112';

foreach($ip_ban as $denied) {
	$ip = $_SERVER['REMOTE_ADDR'];
	if($ip == $denied){
		echo "Access Denied! You have been banned!";
		exit();
	}
}

?>

 

[hasif]

owow its very small. nice script.

 

[Peter]

Possibly this would work better: Allows the ban of multiple IPs, one per line.

//Place this at the top of your php scripts/HTML to prevent access to those IP addresses listed.
<?php
$ip_ban = array();
$ip_ban[] = '111.111.111.111';
$ip_ban[] = '111.111.111.112';

foreach($ip_ban as $denied) {
	$ip = $_SERVER['REMOTE_ADDR'];
	if($ip == $denied){
		echo "Access Denied! You have been banned!";
		exit();
	}
}

?>

You would be as well doing the following

<?php
$ip_ban = array();
$ip_ban[] = '111.111.111.111';
$ip_ban[] = '111.111.111.112'; 

if (in_array($_SERVER['REMOTE_ADDR'], $ip_ban)) {
   echo "Access Denied! You have been banned!";
   exit();
}
?>

 

[.PJ]

If I was to use them / this, I would use the array, and put it into like banned.php and then just call / include banned.php on the footer which is on every page or somthing...

PJ

 

[PoorDoggie]

tis a cool script, but I can never figure out how this kinda script works.

Firstly, with my service provider, my ip address changes every 5 minutes, so I can just wait a few minutes before re-accessing the site, and other people's ip addresses re-knew when they re-logon to their isps. These won't work, I'm telling you! The rest of the people will just use an ipscrambler.

 

[Peter]

yes that is a big problem for using ip's to ban a user.

 

[i386]

Cookies are a kind-of-good way to handle that.

If the visitor blocks cookies, you're out of luck...

I'd recommend setting them with a misleading name, so Firefox users don't think they say you're banned! (i.e. site_user). When the user visits the site, add the site_user cookie with no_c. If they're banned, add it with no_b.

Misleading titles of cookies should work!