- 1 What is the purpose of MAC address?
- 2 Are MAC addresses unique?
- 3 How do MAC addresses work?
- 4 Can MAC Address be used instead of IP address?
- 5 Can someone see my MAC address?
- 6 Do MAC addresses repeat?
- 7 Are MAC addresses permanent?
- 8 How are IP addresses similar to MAC addresses in what ways are the two addresses different?
- 9 What is a MAC address on a router?
- 10 Is Wi-Fi address the same as MAC address?
- 11 What is a MAC address in simple terms?
- 12 How is a MAC address read?
- 13 Why MAC addresses are not used to route packets over the Internet?
- 14 Should I keep my MAC address private?
- 15 Should you hide your MAC address?
The main difference between MAC and IP address is that MAC Address is used to ensure the physical address of the computer. It uniquely identifies the devices on a network. While IP addresses are used to uniquely identifies the connection of the network with that device takes part in a network.
As many you asked, what is difference between IP address and MAC address? The IP address of a device mainly helps in identifying the connection of a network (using which the device is connecting to the network). The MAC Address, on the other hand, ensures the computer device’s physical location. It helps us to identify a given device on the available network uniquely.
Considering this, how do IP and MAC addresses map to each other? Address Resolution Protocol (ARP) The Address Resolution Protocol is a layer 2 protocol used to map MAC addresses to IP addresses. All hosts on a network are located by their IP address, but NICs do not have IP addresses, they have MAC addresses. ARP is the protocol used to associate the IP address to a MAC address.
Also the question is, why we need IP address and MAC address both? So, Computer A could not really learn the MAC Address of Computer 2. And that’s why computers have both MAC Addresses and IP Addresses. MAC Addresses handle the physical connection from computer to computer while IP Addresses handle the logical routeable connection from both computer to computer AND network to network.
Best answer for this question, can 2 devices have the same MAC address? If two devices have the same MAC Address (which occurs more often than network administrators would like), neither computer can communicate properly. On an Ethernet LAN, this will cause a high number of collisions. Duplicate MAC Addresses on the same LAN are a problem.Key Differences MAC address is assigned by the manufacturer of the hardware interface while the IP address is assigned by the network administrator or Internet Service Provider (ISP). Mac address defines the devices identity, but IP address describes how the devices are connected to the network.
What is the purpose of MAC address?
A media access control address (MAC address) is a unique identifier assigned to a network interface controller (NIC) for use as a network address in communications within a network segment. This use is common in most IEEE 802 networking technologies, including Ethernet, Wi-Fi, and Bluetooth.
Are MAC addresses unique?
The IEEE manages MAC addresses. The hardware identification addresses that the IEEE distributes are unique. That makes the probability of matching MAC addresses zero. On the other hand, some hardware MAC addresses are programmable, which makes them spoofable.
How do MAC addresses work?
MAC addresses work with the card in your device that lets it connect wirelessly to the internet, called a Network Interface Controller (NIC). MAC addresses are used to identify which device is which on your local network so that data gets sent to your computer and not your roommate’s smartphone.
Can MAC Address be used instead of IP address?
Originally Answered: Why do we not use the MAC address as an IP address or instead of an IP address in networking? The MAC address contains no geographical information. If the NIC with the desired address is not on your local network, it may be anywhere in the world. The IP address is managed so that it can be found.
Can someone see my MAC address?
Nobody can see your MAC address on the Internet. Only people on the same LAN as you can see your MAC address. (That sometimes includes people sharing WiFi with you.) People don’t necessarily have to share the WiFi, MAC addresses sent wireless are always visible, as long as in range of course.
Do MAC addresses repeat?
Each MAC address is unique to the network card installed on a device, but the number of device-identifying bits is limited, which means manufacturers do reuse them.
Are MAC addresses permanent?
Every network adapter must have a MAC. A MAC is unique and permanent. It’s embedded in each networking adapter by the manufacturer.
How are IP addresses similar to MAC addresses in what ways are the two addresses different?
The differences include the fact that the left-most part of a MAC address identifies its manufacturer whereas the left-most part of an IP addresses identifies the network where the address is located. MAC addresses are assigned by the manufacturer, whereas IP addresses are assigned by the network administrator.
What is a MAC address on a router?
MAC addresses are a unique number or identifier built into modems, routers and other network hardware. To fix this, you will need to configure the router to pretend to have the same MAC address as the ISP “approved” computer, instead of its own. This is called “spoofing the MAC address.
Is Wi-Fi address the same as MAC address?
To improve privacy, your device uses a different MAC address with each Wi-Fi network. To communicate with a Wi-Fi network, a device must identify itself to the network using a unique network address called a Media Access Control (MAC) address.
What is a MAC address in simple terms?
A MAC address is a hardware identification number that uniquely identifies each device on a network. The MAC address is manufactured into every network card, such as an Ethernet card or Wi-Fi card, and therefore cannot be changed.
How is a MAC address read?
MAC Address is a 12-digit hexadecimal number (6-Byte binary number), which is mostly represented by Colon-Hexadecimal notation. First 6-digits (say 00:40:96) of MAC Address identifies the manufacturer, called as OUI (Organizational Unique Identifier).
Why MAC addresses are not used to route packets over the Internet?
The Question I understand that IP addresses are hierarchical, so that routers throughout the internet know which direction to forward a packet. With MAC addresses, there is no hierarchy, and thus packet forwarding would not be possible. So, MAC addresses are not used for packet transfer.
Should I keep my MAC address private?
Probably not. The MAC address is a unique 12 character string assigned by the manufacturer. Unless your device has been granted access to some secure network based solely on its MAC address… giving it out should not be a problem.
Should you hide your MAC address?
Disclosing the MAC address in itself shouldn’t be a problem. MAC addresses are already quite predictable, easily sniffable, and any form of authentication dependent on them is inherently weak and shouldn’t be relied upon. MAC addresses are almost always only used “internally” (between you and your immediate gateway).