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MAC Filtering is not too hard, there are many PHP scripts can lock MAC addresses, for example:
SourceGuardianSourceGuardian 4.0 for PHP is the ultimate protection solution for your PHP scripts. Main feature: Lock to multiple LAN hardware (MAC) addresses.
IPLocIPLoc is a script that locates switch and switchport from IP/Mac-data collected from central routers using SNMP. IPLoc works best with switches who handle RFC 1493 (dot1dTp) and/or RFC 2674 (dot1qFdbTable)
Lan-SentryThis suite of PHP scripts is used for configuring a network to limit access to only certain users. Users that are not authorized will get redirected to a page telling them they can't go anywhere unless they get permission. Only authorized users will be given net access.
mod.guestsmod.guests is a lan party guest management system featuring a form for your participants to join, a list (also to be served on intranet), administration and entrance script.
Here a small php code that describes MAC address:
<?php
exec("ipconfig /all", $arr, $retval);
for ($i=0;$i<count($arr);$i++) {
echo $arr[$i].'<br>';
}
?>
