MAC address

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MAC address

The hardware address of a device connected to a shared network medium. See also Media Access Control.

MAC address

(Media Access Control address) The unique 48-bit serial number in the network circuitry of Ethernet and Wi-Fi devices that identifies that machine from every other globally. Also used in earlier Token Ring networks, the ID is assigned to vendors by the IEEE and "burned into" most network adapters (NICs) at the time of manufacture. However, some NICs are programmable, and the possibility of having the same MAC address is theoretically therefore not impossible. See MAC layer, OUI and binary values.


Logical IP and Physical Ethernet
Each machine in an IP network has an IP address assigned temporarily by software (see DHCP) or permanently by the network administrator. The physical address is assigned by the manufacturer of the hardware. See IP address.







Wireless MAC Addresses
Smartphones have unique MAC addresses for Wi-Fi and Bluetooth as in this iPhone example. Like Ethernet, Wi-Fi also requires an IP address, which can be viewed in Settings. Bluetooth does not use IP addresses.
References in periodicals archive ?
However, nothing can be ascertained because Comelec does not have the records of the MAC addresses of their legitimate PCOS machines and computers nor the list of IP addresses that were assigned to the devices during the 2010 elections, Vitangcol said.
This time, iOS 8 will work with a random and locally assigned MAC addresses which may not be entirely the real address of the device.
Companies that provide ''mobile location analytics'' to retailers, grocery stores, airports, and others say they capture the MAC addresses of shoppers' phones but then scramble them into different sets of numbers and letters to conceal the original addresses -- a process called hashing.
1 extends the functionality of the professional version by offering an option of a quick automatic extraction of MAC addresses for all network computers and providing a better integration with the Active Directory.
The data collected and stored for retrieval includes device MAC addresses and the corresponding street addresses, which could be used to identify individual users in what amounts to clandestine tracking of customer movements on a moment to moment basis.
LAN devices (including wireless LAN devices) communicate which each other by using MAC addresses (which are hardware addresses uniquely assigned in the factory to each device).
Once you have compiled a list of authorized MAC addresses, use the setup software to access your router's MAC address control table (see Exhibit 3).
It did this by keeping a table of MAC addresses for each machine connected to it, then examining packets to see where each should go (a device known as a switch).
MAC addresses are difficult to spoof, so limiting access to certain MAC addresses helps you ensure that you control who's on your network.
You do this by entering the computers' MAC addresses in the Base Station or by configuring a connection to an existing Remote Authentication Dial-In User Service (RADIUS) server on your network to authenticate MAC addresses.
To increase security, an access point can be configured with a list of the MAC addresses associated with the client computers that are allowed access to the network.
However, the algorithm balances MAC addresses rather than traffic and the load may not be equally balanced across all links.