ISA Server does not provide control functions for the MAC address, Why? This is because the MAC address can only be used in the local network, when data packets across the router, the host in the packet source MAC address of the router the MAC address of the outbound interface instead, this time, use the MAC address The control does not apply. So long as the enterprise-level hardware or software firewall, have basically no control functions of the MAC address.

But Microsoft has also long been take into account this point, in Windows, if you install the TCP/IP network protocol component, then you can execute commands ARP. The ARP command is to look at the machine's ARP cache, static binding of IP address and MAC address and delete the static binding entry. In fact, the intention to bind the IP address and MAC address in order to reduce the ARP broadcast traffic, and only can use this function to control the use of IP addresses. Read more