Why Would A Device Have More Than One MAC Address?

Why do I have 3 MAC addresses?

NAt takes the data packet from your computer and encapsalates it so it can be routed on the internet.

So…..

So you should be seeing three MAC addresses on the router one for the local NIC you are attached to, one for the WAN port on the router, and one for the wireless NIC..

Can a switch have multiple MAC addresses associated with a single port?

You can have more than one MAC address on a switch port if: You have a switch connected to it. Could be another managed switch (like a Cisco) or an unmanaged switch (like a consumer Netgear or Linksys switch). You have a virtual server host attached to it with multiple virtual machines sharing the NIC.

How do I identify an unknown device on my network?

Find the MAC addresses, the name of the devices and the IP addresses for all connections in the router’s administrative interface, where you can also find the list of Attached Devices to see the identifying information for unknown devices connected to your network.

Does WiFi and Ethernet have different MAC addresses?

The MAC address is different unique for the separate Wi-Fi and Ethernet connections, so be sure to give the network administrators the correct MAC address based on how the device will be connecting to the network.

Does a VPN hide MAC address?

Using a VPN would not hide your MAC address from a router since VPN is used to hide your IP address on the public internet. In fact, if your MAC would be hidden from a router you would not have access to the internet.

Why do we need both IP and MAC 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.

Can a device have multiple IP addresses?

Yes a computer may have two or more IP address. Actually computer doesn’t have any IP address, a NIC (Network Interface Card) have IP and a computer system have more than one NIC cards hence your system may have more than two IP address each for NIC.

How many MAC addresses can a device have?

Originally Answered: How many MAC Addresses, a PC computer can have? Each NIC card in a computer is assigned 1 unique MAC address. While you can change the MAC address to just about anything, it still can only have 1 address per NIC.

What does MAC address tell you?

The MAC address (short for media access control address) is the worldwide unique hardware address of a single network adapter. The physical address is used to identify a device in computer networks. Since MAC addresses are assigned directly by the hardware manufacturer, they are also referred to as hardware addresses.

Why do I have two different IP addresses?

The router’s two networks That data crosses between them is only due to the workings of your router, which is connected to both. Two different networks imply two different IP addresses. On the internet side, your router is typically assigned an IP address by your ISP when it boots up or first connects.

How do I get multiple IP addresses?

How to assign multiple IP addresses to the same NICChoose Settings -> Network Connections on the Windows Start menu.Right-click on the Local Area Connection, choose Properties.Highlight Internet Protocol (TCP/IP), click Properties.More items…

Is giving out your MAC address dangerous?

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. It is not common for network security to rely on MAC addresses.

Can a device have multiple MAC addresses?

Each network interface has its own unique MAC address, assigned by the vendor of the equipment. So if you have a wired and a wireless interface you will see two addresses.

What is the difference between Mac and IP address?

MAC Address stands for Media Access Control Address. IP Address stands for Internet Protocol Address. MAC Address ensure that physical address of the computer is unique. IP Address is a logical address of the computer and is used to uniquely locate computer connected via a network.

Does routers have MAC address?

So your router has a MAC address so the various machines can talk to each other using Ethernet, and a IP address to communicate with the world.

What happens if 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. … Duplicate MAC Addresses separated by one or more routers is not a problem since the two devices won’t see each other and will use the router to communicate.

Does a device MAC address change?

MAC addresses are usually assigned when the device is manufactured and, unlike IP addresses, they generally do not change when moving from one network to another. In other words, MAC addresses have historically been static and unique to each device.