Quick Answer: Why We Need Both MAC And IP Address?

What does it mean if someone is using your IP address on a Mac?

For whatever reason it seems that another Mac, or the iPod touch, iPad, and iPhone is often the culprit.

Apparently these iOS devices like to maintain the same IP address and will attempt to force themselves onto the same IP that they had previously been assigned, which can lead to the error message..

Why is an IP address necessary?

An Internet Protocol address, or IP address is a unique identifier given to every machine in a network. An IP address serves two primary functions. … Because an IP address is a unique identifier, it allows computers to send and receive information to and from specific computers in a given network.

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.

What happens if someone has your IP address?

If someone knows your IP address, they can try to connect to your device directly. … There are tens of thousands of ports for every IP address, and a hacker who knows your IP can try to brute-force a connection. Once they succeed, hackers can take control of your device, steal your data or even impersonate you.

What does MAC stand for?

Media Access Control AddressStands for “Media Access Control Address,” and no, it is not related Apple Macintosh computers.

What is difference between Mac and IP address?

Both MAC Address and IP Address are used to uniquely identify a machine on the internet. 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.

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.

Can 2 devices share the same IP address?

Answer: If you access the Internet from a local network (LAN) in your home or business, it is possible that you share an IP address with other users. This is because, while you might use different computers or devices, you all use the same Internet connection. … After all, most homes only had one computer.

What does IP address stand for?

A private IP address is the address of your device connected on the home or business network. … Android users can click on the network name in their WiFi settings, and it will show the IP address.

Why are MAC addresses needed?

The MAC address is an important element of computer networking. MAC addresses uniquely identify a computer on the LAN. MAC is an essential component required for network protocols like TCP/IP to function. … Changing a MAC address can be necessary in some cases to keep an Internet connection working.

Why would 2 computers have the same IP address?

This occurs when two computers on the same LAN network end up with the same IP address. When this occurs, both computers end up not being able to connect to network resources or perform other network operations. … If you have connected multiple wireless routers to your network and DHCP is enabled on more than one device.

What is an example of MAC address?

Here’s an example of a MAC address for an Ethernet NIC: 00:0a:95:9d:68:16. As you’ve probably noticed, the MAC address itself doesn’t look anything like an IP address (see yours here). The MAC address is a string of usually six sets of two-digits or characters, separated by colons.

Can a MAC address be changed?

All MAC addresses are hard-coded into a network card and can never be changed. However, you can change or spoof the MAC address in the operating system itself using a few simple tricks. … If you can sniff out a legitimate MAC address, you can then spoof your MAC address and gain access to the WiFi network.

What happens if 2 devices have the same IP address?

If you mistakenly assign the same static address to two devices, you’ll run into a duplicate IP error. Another IP conflict scenario can occur if you have two DHCP servers on your network (which you should avoid). … If both devices are trying to act as a router, they might hand out duplicate IP addresses.

What is a 192.168 IP address?

Using 192.168. 192.168. 0.0 is the beginning of the private IP address range that includes all IP addresses through 192.168. 255.255. This IP address is usually not used on a network, and a phone or computer wouldn’t be assigned this address.

Is MAC address physical or logical?

MAC Address is a physical address. IP Address is a logical address.

Can a MAC address be traced?

A MAC address can easily be traced for as far as it travels. The problem is, a MAC address doesn’t travel far enough to be useful. I know that all computers have a unique MAC address. … Seems like this could stop laptop burglaries if that MAC address thing is traceable.

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.