Most and other include an optional feature called filtering, or hardware address filtering. It's supposed to improve security by limiting the devices that can join the network. However, since MAC addresses can be spoofed/faked, is filtering these hardware addresses actually useful, or is it just a waste of time? Nokia Software Updater For Windows 7 64 Bit Free Download. How MAC Address Filtering Works On a typical wireless network, any device that has the proper credentials (knows the and password) can authenticate with the router and join the network, getting an IP address and access to the internet and any shared resources. MAC address filtering adds an extra layer to this process.
Before letting any device join the network, the router checks the device's MAC address against a list of approved addresses. If the client's address matches one on the router's list, access is granted as usual; otherwise, it's blocked from joining. How to Configure MAC Address Filtering To set up MAC filtering on a router, the administrator must configure a list of devices that should be allowed to join.