Is there any use for MAC address to know what does MAC mean

The MAC address is the physical address of the NIC.

A MAC (Media Access Control) address is an identifier that identifies a LAN (Local Area Network) node. The physical address of a network card is usually the EPROM (a flash memory chip, usually written by a program) burned into the network card by the network card manufacturer, which stores the addresses of the computer that really identifies the computer that sent the data and the host that received the data when transmitting data.

That is to say, in the physical transmission process at the bottom of the network, the host is identified by the physical address, which is generally unique in the world. For example, the physical address of a well-known Ethernet card is an integer of 48 bits (bits), such as: 44-45-53-54-00-00, which is stored in a machine-readable way into the host interface.

The Ethernet Address Management Authority (IEEE) divides Ethernet addresses, that is, different combinations of 48 bits, into several independent contiguous address groups, and manufacturers who produce Ethernet network cards purchase one of them, and give unique addresses to Ethernet cards one by one during specific production.

Figuratively speaking, the MAC address is like the ID number on our ID card, which is globally unique.

How do I get a native Mac?

For a small number of machines, we can get the MAC address like this: in Windows 98 ME, click "Start" "Run" and enter "WinIPCFG" Enter. You can see the MAC address.

In Windows 2000 XP, click Start Run Enter cmd Enter Enter IPCONFIG ALL Enter. You can see the MAC address.

It's useless if you don't want to change the physical address of your network card

The MAC (Media Access Control or Medium Access Control) address, which is translated as access control, or physical address or hardware address, is used to define the location of network devices. In the OSI model, the third layer network layer is responsible for IP addresses, and the second layer is responsible for MAC addresses.

So a host will have a MAC address, and each network location will have an IP address that is unique to it. The switch operating at the data link layer maintains a database of the computer's MAC addresses and its own ports (i.e., the MAC address table), and the switch uses the data frame based on the "destination MAC address" field in the received data frame.

The MAC address is the address on the network card of the computer device, also known as the physical address. It is represented by a 6-segment two-digit hexadecimal number, e.g. 00-50-ba-ce-d6-f9. If a computer has two network cards, it will have two physical addresses.

A MAC address is a physical address solidified in the serial EEPROM on a network card, typically 48 bits long. The identifier used to represent each site on the Internet, expressed in hexadecimal numbers. Once any network device (such as a network card or router) is produced, its MAC address will always be unique and cannot be changed by the trapped user.

Method 1: 1. Click the start button in the lower left corner, find "Run", and enter cmd enter in the run. As shown in the figure below:

2. In the command prompt that opens, enter ipconfig all or ipconfig -all, then press enter to find the "physical address".

Method 2: 1. Click the start button in the lower left corner of the desktop and select "Control Panel". As shown in the figure below:

2. In the "Control Panel" that opens, find "Network & Internet"; Find Network and Sharing Center and click Open.

<>3. In the Network and Sharing Center, open Change Adapter Settings.

4. Right-click the local connection icon and select the "Status" option to enter.

5. In the "Local Connection Status", click "Details", and then in the "Details", find the "Physical Address", that is, the MAC address.

MAC address, the full name is ** access control address (media access control address), also known as physical address (physical address) Jiankai, socks code refers to the address used to identify the network interface on the network equipment (such as computers, routers, switches, etc.). Each network interface has a unique MAC address, usually consisting of 12 hexadecimal digits (0-9 and A-F), separated by colons or dashes. MAC addresses play an important role in network communication, as they can be used to uniquely identify a device and prevent conflicts and confusion in the network.

During packet transmission, packets carry the MAC addresses of the source and destination devices so that the network device can correctly route and correct which packets to change. It is important to note that MAC address and IP address are two different concepts. The IP address is used to identify the location of the device on the network, while the MAC address is used to identify the identity of the device itself.

MAC addresses are usually fixed, while IP addresses can be assigned and changed dynamically.

1. MAC address, literally translated as **access control address, also known as LAN address, MAC address, Ethernet address or physical address It is an address used to confirm the location of network equipment. In the OSI model, the third layer of the network is responsible for the IP address, and the second layer of the data link layer is responsible for the MAC address. If a device has one or more NICs, each NIC needs to have a unique MAC address.

2. The MAC address is also called the physical address and hardware address, which is burned into the EPROM (a flash memory chip, usually erased by the program) when produced by the network equipment manufacturer. Both IP addresses and MAC addresses are represented in binary in computers, with IP addresses being 32-bit and MAC addresses being 48-bit.

To put it simply, it means that the iPhone wants to get the connected device of the LAN (router) where you are located. This feature is designed to protect your local network from scanning devices on your local network indiscriminately by a large number of apps.

In previous versions of iOS, apps could scan devices on their local network at will, so apps could easily get the names and MAC addresses of all devices on their local network. Nowadays, iPhones can already identify specific LANs by Mac addresses.

MAC address is an address that confirms the location of network devices, each network card has a unique MAC address, plus the MAC address is also unique, the device manufacturer will allocate MAC according to a certain rule, so different LANs are unique and can be identified.

IP addresses are logic-based, flexible, hardware-free, and easy to remember. The MAC address is consistent with the hardware to a certain extent, is physical, and can identify a specific network node. Both types of addresses have their own advantages, and they can be used differently depending on the conditions.

Most ways to access the Internet are to organize hosts together through a local area network and then connect to them through devices such as switches or routers and the Internet. As a result, the question arises of how to distinguish between specific users and prevent IP address theft. Since the IP address is only a logical identifier that can be modified by anyone at will, it cannot be used to specifically identify a user.

This is not the case with MAC addresses, which are solidified in the network card. Theoretically, unless the hardware is stolen, i.e., the network card, it generally cannot be impersonated. Based on this characteristic of MAC addresses, the LAN adopts the method of identifying specific users with MAC addresses.