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Unique identifier assigned to network interfaces
A MAC address (medium access control address or media access control address) is a unique identifier assigned to a network interface controller (NIC) for
MAC_address
Canadian entertainment company
it!. Retrieved August 21, 2025 – via YouTube. Mac Address (November 14, 2024). "Post from Mac Address". Linus Media Group Inc. Retrieved August 5, 2025
Linus_Media_Group
Changing a factory-assigned MAC address
MAC spoofing is a technique for changing a factory-assigned Media Access Control (MAC) address of a network interface on a networked device. The MAC address
MAC_spoofing
128-bit number used to identify information in computer systems
48-bit MAC address of the "node" (that is, the computer generating the UUID), with a 60-bit timestamp. On systems with 64-bit EUI-64 "MAC addresses", the
Universally_unique_identifier
Computer network security technique
In computer networking, MAC address filtering is a network access control method whereby the MAC address assigned to each network interface controller
MAC_filtering
Associates addresses in the layers of a networked device implementation
The Address Resolution Protocol (ARP) is a communication protocol for discovering the link layer address, such as a MAC address, associated with an internet
Address_Resolution_Protocol
Means of addressing all devices on a network with a single transmission
MAC address. In Internet Protocol version 4 (IPv4) networks, broadcast addresses are special values in the host-identification part of an IP address.
Broadcast_address
Dynamic table that maps network addresses to ports
forwarding information base (FIB), also known as a forwarding table or MAC (address) table, is most commonly used in network bridging, routing, and similar
Forwarding_information_base
Label to identify a network interface of a computer or other network node
interface's MAC address using the modified EUI-64 format, but this method is now not recommended for privacy reasons.) Unique local addresses are addresses analogous
IPv6_address
Logical identifier addressing a specific group of devices on a network
1D-conformant MAC bridges. 802.11 wireless networks use the same MAC addresses for multicast as Ethernet. Broadcast address Reserved IP addresses Bit count
Multicast_address
Obfuscation methods used in tracking users
MAC address anonymization performs a one-way function on a MAC address so that the result may be used in tracking systems for reporting and the general
MAC_address_anonymization
Numerical label used to identify a network interface in an IP network
the address may be assigned to another device. Some DHCP implementations attempt to reassign the same IP address to a host, based on its MAC address, each
IP_address
Identifier for a node or network interface in a telecommunications network
networks including the Internet IPX address, in NetWare X.25 or X.21 address, in a circuit switched data network MAC address, in Ethernet and other related
Network_address
24-bit number in networking equipment that uniquely identifies its manufacturer
MAC addresses, Subnetwork Access Protocol protocol identifiers, World Wide Names for Fibre Channel devices or vendor blocks in EDID. In MAC addresses
Organizationally unique identifier
Organizationally_unique_identifier
IPv6 multicast address used by NDP
MAC address prefix 33:33:FF:28:9C:5A Solicited-node multicast MAC address -- -- -- The least-significant 24 bits Solicited-node multicast addresses are
Solicited-node multicast address
Solicited-node_multicast_address
Principal protocol used to assign IPv4 addresses on an IPv4 network
allocation, fixed address allocation, reservation, and MAC/IP address binding. An administrator maps a unique identifier (a client id or MAC address) for each
Dynamic Host Configuration Protocol
Dynamic_Host_Configuration_Protocol
Technique employed to compromise the security of network switches
destined for. In a typical MAC flooding attack, a switch is fed many Ethernet frames, each containing a different source MAC address, by the attacker. The
MAC_flooding
Networking hardware that forwards packets based on hardware address
destination device. A network switch is a multiport network bridge that uses MAC addresses to forward data at the data link layer (layer 2) of the OSI model. Some
Network_switch
Service layer in IEEE 802 network standards
append(tx)/remove(rx) MAC address The local network addresses used in IEEE 802 networks and FDDI networks are called MAC addresses; they are based on the addressing scheme
Medium_access_control
Networking service
learns the CE's MAC address, storing it locally along with LSP routing information. It then checks the frame's destination MAC address. If it is a broadcast
Virtual_Private_LAN_Service
Obsolete computer networking protocol
Protocol (IPv4) address from a computer network, when all it has available is its link-layer or hardware address, such as a MAC address. The client broadcasts
Reverse Address Resolution Protocol
Reverse_Address_Resolution_Protocol
Software utility for discovering and probing hosts on a computer network
using Address Resolution Protocol (ARP) requests addressed to a host identified by its MAC address. The utility may use ARP to resolve an IP address provided
Arping
Address resolution protocol for proxy servers
destination and offers its own MAC address as the (ostensibly final) destination). The traffic directed to the proxy address is then typically routed by
Proxy_ARP
Proprietary file sharing between Apple devices
"Data Frames" using generated link-local IPv6 addresses instead of the Wi-Fi chip's fixed MAC address. In November 2025, Quick Share added limited AirDrop
AirDrop
Network address usable for communication within a subnet
guaranteed automatically by the address selection methodology. It may be MAC-address based, or randomized. Automatic duplicate address detection algorithms prevent
Link-local_address
Type of cyberattack
(spoofed) Address Resolution Protocol (ARP) messages onto a local area network. Generally, the aim is to associate the attacker's MAC address with the
ARP_spoofing
Unit of data on an Ethernet network
starts with an Ethernet header, which contains destination and source MAC addresses as its first two fields. The middle section of the frame is payload
Ethernet_frame
about each of your network connections, including the MAC address of the interface, the IP address assigned to it, its speed and status, a count of data
List_of_built-in_macOS_apps
Node in a computer network
IP address into a MAC address with the Address Resolution Protocol (ARP) sequence and then encapsulates the IP packet into a MAC frame addressed to the
Default_gateway
Router interface to connect to a network
The physical gateway address is called the media access control(MAC) address or burned in address (BIA). The physical address is assigned when the device
Gateway_address
Network protocol that builds a loop-free logical topology for Ethernet networks
costs. Destination MAC: 48 bits The destination MAC address is an STP multicast address. The IEEE 802 standard Bridge Group Address is 01:80:C2:00:00:00
Spanning_Tree_Protocol
Network that allows computers to share resources and communicate with each other
the destination MAC address in each frame. They learn the association of physical ports to MAC addresses by examining the source addresses of received frames
Computer_network
Web page displayed to new users of a network
not have to interact with the captive portal in order to use them. The MAC address of attached clients can also be used to bypass the login process for
Captive_portal
2020 mobile operating system
devices now use a different MAC address for each Wi-Fi network instead of using the physical device Wi-Fi MAC address. A new privacy option can restrict
IOS_14
Version 6 of the Internet Protocol
link-layer addresses (e.g. MAC addresses), because it does not support the broadcast addressing method, on which the functionality of the Address Resolution
IPv6
Network interface controller mode that eavesdrops on messages intended for others
destination MAC address. In non-promiscuous mode, when a NIC receives a frame, it drops it unless the frame is addressed to that NIC's MAC address or is a
Promiscuous_mode
Mechanism to wake up computers via a network
system is powered down. If a magic packet arrives and is addressed to the device's MAC address, the NIC signals the computer's power supply or motherboard
Wake-on-LAN
Address book software by Apple
known as Address Book was included with Mac OS X from its release in 2001 and in preceding beta versions. Address Book was rewritten for Mac OS X Jaguar
Contacts_(Apple)
Family of wireless network protocols
link layer, but with extra address fields. MAC addresses are used as network addresses for routing over the LAN. Wi-Fi's MAC and physical layer (PHY) specifications
Wi-Fi
Practice of allowing people or entities, generally
area network (LAN) security. Many network admins set up MAC address whitelists, or a MAC address filter, to control who is allowed on their networks. This
Whitelist
Computer networking protocol
possible via MAC addresses. As the computer does not know the MAC address of the DSL-AC, it sends out a PADI packet via an Ethernet broadcast (MAC: ff:ff:ff:ff:ff:ff)
Point-to-Point Protocol over Ethernet
Point-to-Point_Protocol_over_Ethernet
Computer networking technology
provides services up to and including the data link layer. The 48-bit MAC address was adopted by other IEEE 802 networking standards, including IEEE 802
Ethernet
Using multiple network connections in parallel to increase capacity and reliability
share one logical address (i.e., IP) or one physical address (i.e., MAC address), or it allows each interface to have its own address. The former requires
Link_aggregation
Protocol in the Internet protocol suite used with IPv6
IP address and destination 33:33:FF:00:00:55 MAC address), which is accepted by B which is listening on its own solicited-node multicast address on the
Neighbor_Discovery_Protocol
Technology for computer networking
identical MAC addresses are supported on Token Ring (a feature used by S/390 mainframes). Switched Ethernet cannot support duplicate MAC addresses without
Token_Ring
Malware used by the FBI
communications on a network. Because the MAC address does not change and is intended to be unique, a MAC address can allow law enforcement to identify whether
Network Investigative Technique
Network_Investigative_Technique
Type of computer memory
table with the frame's source MAC address and the port it was received on. It then looks up the destination MAC address in the table to determine what
Content-addressable_memory
IEEE standard for Shortest Path Bridging
shortest paths with a MAC-in-MAC encapsulated frame. The MAC header on any of the NNI links would show an outer source address of 00:00:00:70:00, an outer
IEEE_802.1aq
Extension of a private network across a public one
media. In Ethernet networks, each NIC has a unique Media Access Control (MAC) address, usually stored in the controller's permanent memory. A repeater is an
Virtual_private_network
Inter-router protocol that automatically assigns routers to hosts
must use 00-00-5E-00-01-XX as its media access control (MAC) address. The last byte of the address (XX) is the virtual router identifier (VRID), which is
Virtual Router Redundancy Protocol
Virtual_Router_Redundancy_Protocol
Layer 3 switching technology
outbound interface and the correct MAC address for its FIB entry. The MAC address is the IP address's MAC address if the destination's subnet is directly
Cisco_Express_Forwarding
Computer network security technique
destination MAC address. Frames received from an uplink port are forwarded in the normal way (i.e. to the port hosting the destination MAC address, or to all
Private_VLAN
Network system for establishing a fault-tolerant default gateway
gateway IP address and answer ARP requests with the same MAC address, thus achieving transparent default gateway failover. In the virtual MAC address, Xs represent
Hot_Standby_Router_Protocol
IEEE standard for port-based network access control
frames to a special Layer 2 MAC address (01:80:C2:00:00:03) on the local network segment. The supplicant listens at this address, and on receipt of the EAP-Request
IEEE_802.1X
Fourth version of the Internet Protocol
802 networking technologies, including Ethernet, the hardware address is a MAC address. This article was adapted from the following source under a CC
IPv4
Aspect of wireless networks
pre-approved MAC addresses. Most wireless access points contain some type of MAC ID filtering. However, an attacker can simply sniff the MAC address of an authorized
Wireless_security
Set of addresses in the IP address allocation hierarchy
design, an address pool may be the availability of a set of addresses (IP address, MAC address) available to an application that is shared among its users
Address_pool
Standard for computer networking over a cable television system
internet, the user's modem will report its MAC address to the ISP, and if the ISP recognizes the modem's MAC address as belonging to a paying subscriber, the
DOCSIS
Identifier that is unique among all used identifiers
be globally unique. Examples include (1) the media access control address MAC address uniquely assigned to each individual hardware network interface device
Unique_identifier
Sending datagrams to multiple receivers
setting a specific layer 2 MAC address on the Ethernet packet address. Broadcast packets make use of the broadcast MAC address FF:FF:FF:FF:FF:FF. IPv4 multicast
IP_multicast
Arrangement of a communication network
Electronics Engineers (IEEE) maintains and administers MAC address uniqueness. The size of an Ethernet MAC address is six octets. The three most significant octets
Network_topology
Canadian YouTuber (born 1986)
26 million (Channel Super Fun) 596 thousand (LMG Clips) 613 thousand (Mac Address) 235 thousand (LinusCatTips) 32.6 thousand (PSU Circuit) 139 thousand
Linus_Sebastian
Information used for message authentication and integrity checking
for the term MAC, especially in communications to distinguish it from the use of the latter as Media Access Control address (MAC address). However, some
Message_authentication_code
IEEE networking standard supporting VLANs
Spanning Tree Protocol. 802.1Q adds a 32-bit field between the source MAC address and the EtherType fields of the original frame. Under 802.1Q, the maximum
IEEE_802.1Q
Network protocol
address in IP is variable, while in IPX it is fixed. As the node address is usually identical to the MAC address of the network adapter, the Address Resolution
Internetwork_Packet_Exchange
Group of all devices on the same wireless network
preset value such as a serial number or a MAC address of another network interface. As with the MAC addresses used for Ethernet devices, an infrastructure
Service_set_(802.11_network)
Hardware component that connects a computer to a network
activity occurs. The NIC may include ROM to store its factory-assigned MAC address. The NIC may use one or more of the following techniques to indicate
Network_interface_controller
Topics referred to by the same term
Look up Mac, mac, MAC, maç, or mac- in Wiktionary, the free dictionary. Mac or MAC may refer to: Mac (computer), a line of personal computers made by Apple
Mac
Ninth and last major release of the classic Mac OS (1999)
transitioning all future development to Mac OS X. The final updates to Mac OS 9 addressed compatibility issues with Mac OS X while running in the Classic Environment
Mac_OS_9
Security-focused, Android-based mobile operating system
generates a new MAC address every time a Wi-Fi connection is established, instead of the default Android behavior of randomizing the address per Wi-Fi network
GrapheneOS
Device that creates a larger computer network from two smaller networks
interface found in the CAM based on the frame's destination MAC address. If the destination address is unknown the switch sends the frame out on all interfaces
Network_bridge
Wireless network standard
have up to four address fields. Each field can carry a MAC address. Address 1 is the receiver, Address 2 is the transmitter, Address 3 is used for filtering
IEEE_802.11
Standard for bridging over a provider's network
Destination Address (B-DA): 48 bits Backbone destination MAC address. Backbone Source Address (B-SA): 48 bits Backbone source MAC address. Backbone EtherType:
IEEE_802.1ah
Ethernet networking standard
the following manner: The four-byte tag is inserted between the source MAC address (SAMAC) of the untagged frame and its EtherType field. The newly inserted
IEEE_802.1ad
Network time synchronization protocol
identifier for the clock. This is typically constructed based on a device's MAC address. Quality – Both versions of IEEE 1588 attempt to quantify clock quality
Precision_Time_Protocol
Network protocol
Ethernet MAC addresses. Implementations in 2010 used the same address mapping that has been specified for mapping IPv6 multicast addresses to Ethernet MAC addresses
RDMA_over_Converged_Ethernet
management tool suitable for small to very large networks. IP address and MAC address data is collected into a PostgreSQL database using SNMP, CLI, or
Netdisco
Security vulnerabilities of the network interface layer
switch port. When an invalid MAC address is detected on the port, the switch can either block the offending MAC address or shut down the port. At the
Link_layer_security
Storage network protocol
Destination MAC Address | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ 4 | Ethernet Destination (cont) | Ethernet Source MAC Address |
ATA_over_Ethernet
Protocol used by network devices for advertising their identity
name and description VLAN name IP management address System capabilities (switching, routing, etc.) MAC/PHY information MDI power Link aggregation The
Link_Layer_Discovery_Protocol
3 and 10 seconds by default. The elected AVG then assigns a virtual MAC address to each member of the GLBP group, including itself, thus enabling AVFs
Gateway Load Balancing Protocol
Gateway_Load_Balancing_Protocol
Operating system for Apple computers
macOS (previously OS X and originally Mac OS X) is a proprietary Unix operating system, derived from OPENSTEP for Mach and FreeBSD, which has been marketed
MacOS
Geolocation system
"fingerprinting". Typically a wireless access point is identified by its SSID and MAC address, and these data are compared to a database of supposed locations of access
Wi-Fi_positioning_system
Service discovery protocol
following addressing: IPv4 address 224.0.0.251 or IPv6 address ff02::fb UDP port 5353 When using Ethernet frames, the standard IP multicast MAC address 01:00:5E:00:00:FB
Multicast_DNS
Form of message tampering
data. ARP spoofing: Sends fake ARP messages to associate the attacker’s MAC address with a target IP, intercepting local network traffic. DNS spoofing or
Man-in-the-middle_attack
Proprietary link aggegration protocol
well-known Cisco multicast address 01-00-0C-CC-CC-CC with protocol type code 0x0104. PAgP uses the same multicast group MAC address as Cisco Discovery Protocol
Port_Aggregation_Protocol
Layer 2 network routing loop
alternately associate the sending MAC address with one or the other port. It may then incorrectly direct traffic for that MAC address to the wrong port, effectively
Switching_loop
Protocol
Multicast address: IPv4 - 224.0.0.252, MAC address 01-00-5E-00-00-FC IPv6 - FF02:0:0:0:0:0:1:3 (this notation can be abbreviated as FF02::1:3), MAC address 33-33-00-01-00-03
Link-Local Multicast Name Resolution
Link-Local_Multicast_Name_Resolution
Monitors for the presence of unauthorized access points
it is achieved by comparing the MAC address of the participating wireless devices. Rogue devices can spoof MAC address of an authorized network device
Wireless intrusion prevention system
Wireless_intrusion_prevention_system
Collection of Address Resolution Protocol entries
a collection of Address Resolution Protocol entries (mostly dynamic), that are created when an IP address is resolved to a MAC address (so the computer
ARP_cache
Overview of resource records permissible in zone files of the Domain Name System
Updates RFC 1034 and 1035. P. Koch (June 2001). A DNS RR Type for Lists of Address Prefixes (APL RR). Network Working Group. doi:10.17487/RFC3123. RFC 3123
List_of_DNS_record_types
Communications protocol for lighting control
originally on the 2.0.0.0/8 networks. Addressing is typically fixed per node, often locked to the MAC Address and an "OEM" code allocated to the manufacturer
Art-Net
Software suite
each packet was individually encrypted using the IV information, the MAC address, and the pre-shared key as inputs. The RC4 cipher was used to encrypt
Aircrack-ng
Type of denial-of-service attack
WPA2 for data privacy, and the attacker only needs to know the victim's MAC address, which is available in the clear through wireless network sniffing. One
Wi-Fi_deauthentication_attack
Unauthorized wireless access point
The first of the above two conditions is easy to test—compare wireless MAC address (also called as BSSID) of the access point against the managed access
Rogue_access_point
Ability to balance computer network traffic
stations MAC address (which applies to the clusters IP address) to a virtual MAC address and all NIC's in the NLB cluster use this same MAC address. This
Network_load_balancing
Low-level protocol used for controlling hardware components
visible to the operating system by using RMCP ports filtering, a separate MAC address, or through VLAN tagging), and handling of NIC's interrupts and error
Management Component Transport Protocol
Management_Component_Transport_Protocol
Networking protocol
Support of several addressing modes. In addition to the 6-byte MAC address (including multicast and unicast), it supports a MAC address-less mode, and an
Generic_Stream_Encapsulation
Technologies for automatic network connection configuration
autoconfigured address. IPv6 hosts generally combine a prefix of up to 64 bits with a 64-bit EUI-64 derived from the factory-assigned 48-bit IEEE MAC address. The
Zero-configuration_networking
Unauthorized use of another's internet connection
only give an IP Address to computers whose MAC address is on the list. Thus, the network administrator would obtain the valid MAC addresses from each of
Piggybacking (Internet access)
Piggybacking_(Internet_access)
MAC ADDRESS
MAC ADDRESS
Male
English
Variant spelling of English Matt, MAT means "gift of God."
Boy/Male
American, Australian, British, Celtic, Chinese, Danish, English, French, Gaelic, Irish, Latin, Scottish, Swiss
Son of; Taken from Mackenzie; Greatest
Male
Egyptian
, Divine Father.
Female
English
Variant spelling of English May, a pet form of Margaret, MAE means "pearl," and Mary, meaning "obstinacy, rebelliousness" or "their rebellion."
Boy/Male
Gaelic
Son of the handsome man.
Female
Vietnamese
 Vietnamese name MAI means "golden flower." Compare with another form of Mai.
Girl/Female
American, Australian, Danish, French, German, Greek, Hebrew, Japanese, Scottish, Swedish, Thai, Vietnamese
May; Goddess of Spring Growth; Brightness; Dance; Coyote; Pearl; Cherry Blossom; Apricot Blossom; Combination of Ma and Ai; Scottish Form of Margaret
Male
French
 Short form of French Marceau, MARC means "defense" or "of the sea." Compare with another form of Marc.
Boy/Male
Gaelic
Son of the one who serves the dark man.
Male
English
Variant spelling of English unisex Macey, MACY means "gift of God."
Male
Hebrew
Short form of Hebrew Immanuw'el (English Immanuel), MAN means "God is with us."
Girl/Female
American, Anglo, Australian, British, Chinese, Christian, English, French, German, Greek, Hebrew, Japanese
The Fifth Month of the Year; Kinswomen; May; The Month May was Goddess of Spring Growth; Bitter; Pearl; Beloved
Boy/Male
Gaelic
Son of the man from the ford by the oak trees.
Boy/Male
Gaelic
Son of the man who lives by the clear stream.
Male
English
Originally a short form of surnames, mostly Scottish, beginning with Mac-, MACK means "son of," it is now sometimes given as a forename.Â
Female
Japanese
(舞) Japanese name MAI means "dance." Compare with another form of Mai.
Male
Irish
Irish Gaelic name MAC DARA means "son of oak." This is the name of a patron saint and is still common in Ireland, especially in Connemara.
Boy/Male
English
A mace was a medieval weapon used by knights.
Female
English
Short form of English Maggie, MAG means "pearl."
Boy/Male
Celtic Scottish American Gaelic
Son of.
MAC ADDRESS
MAC ADDRESS
Surname or Lastname
English (or Norman origin) and French
English (or Norman origin) and French : habitational name from any of several places in France, for example in Manche and Somme, that are named with Old French beu, bel ‘fair’, ‘lovely’ + champ(s) ‘field’, ‘plain’. In English the surname is generally pronounced Beecham.Two families of this name which were prominent in the 13th and 14th centuries in England. One was established in Somerset, the other in Warwickshire, and there is no apparent connection between them.
Girl/Female
Tamil
Of the family
Boy/Male
Hindu, Indian
Lord Shiva; Love of God; Brave
Boy/Male
Indian, Sanskrit
Causing Delight
Boy/Male
Hindu, Indian
A Form of Janessa
Boy/Male
Gujarati, Hindu, Indian, Kannada, Malayalam, Marathi, Oriya, Telugu
Sacred Pot
Boy/Male
German
War counselor.
Girl/Female
Spanish
White.
Boy/Male
Hindu, Indian
Strong Warmth of Sun
Boy/Male
Muslim
Little full Moon
MAC ADDRESS
MAC ADDRESS
MAC ADDRESS
MAC ADDRESS
MAC ADDRESS
n.
Alt. of Abram-man
n.
A species of lac. See the Note under Lac.
superl.
Furious with rage, terror, or disease; -- said of the lower animals; as, a mad bull; esp., having hydrophobia; rabid; as, a mad dog.
n.
A married man; a husband; -- correlative to wife.
a.
Quite mad; -- raving crazy.
n.
Anything growing thickly, or closely interwoven, so as to resemble a mat in form or texture; as, a mat of weeds; a mat of hair.
v. i.
To grow thick together; to become interwoven or felted together like a mat.
v. t.
To represent by a map; -- often with out; as, to survey and map, or map out, a county. Hence, figuratively: To represent or indicate systematically and clearly; to sketch; to plan; as, to map, or map out, a journey; to map out business.
n.
A term of familiar address often implying on the part of the speaker some degree of authority, impatience, or haste; as, Come, man, we 've no time to lose!
superl.
Angry; out of patience; vexed; as, to get mad at a person.
n.
The merrymaking of May Day.
v. t.
To twist, twine, or felt together; to interweave into, or like, a mat; to entangle.
n.
Anything which represents graphically a succession of events, states, or acts; as, an historical map.
v. t.
To make mad or furious; to madden.
superl.
Excited beyond self-control or the restraint of reason; inflamed by violent or uncontrollable desire, passion, or appetite; as, to be mad with terror, lust, or hatred; mad against political reform.
n.
The common European gull (Larus canus); -- called also mar. See New, a gull.
n.
An officer who carries a mace as an emblem of authority.
v. i.
To be mad; to go mad; to rave. See Madding.