Simple security check for computer name
Posted: Thu Dec 15, 2005 11:03 pm
This script will us reverse lookup to determine the users computername.
The function gethost() get the name using the remote_addr veriable.
Then the case checks for approved computers. I found the function surfing then just added what I needed.
The function gethost() get the name using the remote_addr veriable.
Then the case checks for approved computers. I found the function surfing then just added what I needed.
Code: Select all
// Simple security using IP address.
$rmtip = $_SERVER['REMOTE_ADDR'];
$hostname = substr(gethost($rmtip), strpos(gethost($rmtip), "."));
switch ($hostname):
case computername:
$auth = "ok";
break;
default:
echo "Sorry, you do not have access to this page.<br>
If you believe you should have access please contact so in so</b></center>";
exit();
endswitch;
// End of IP check.
// Function to get computer name.
function gethost($ip)
{
$host = `host $ip`;
$host = end(explode(' ',$host));
$host = substr($host,0,strlen($host)-41);
$chk = split("\(",$host);
if($chk[1]) return $ip." (".$chk[1].")";
else return $host;
}