DHCP! How to prevent

RouterOS General
1

I use DHCP Server and give IP Address base on MAC Address, then i do limitation (speed and access) on each IP Address
Example, for my boss i give more speed than others and give unlimited access to any website; but for other employee i give lower speed and limit their access, like cannot access friendster, facebook, myspace, etc.

But i worry, because someone can use MAC Address changer or change the IP to static IP Address.

So my question are:

  1. How to detect client that use MAC Address Changer and will get the real MAC Address ?
  2. How to protect, so only client that get IP Address from DHCP Server can access to the internet.. instead use static IP Address

Thanks,..

2

It is not possible on router to detect the things like this.

Some management switches allow to bind port/MAC-address, if it is not possible to use swich like this, but you are experiencing a lot of users who are changing MAC-addresses, you may go with PPPoE to secure the network and set queue per used UserName.