Networking – what’s an interface address? – super user

What’s an interface address?

Network interfaces have two addresses:

A layer 2 address – The MAC address (Also known as Hardware , physical or burned-in address).

A layer 3 address – The Ip (version 4 or 6).

What exactly is it employed for?

Both addresses are utilized to be able to communicate between network devices.

MAC address – to distinctively identify every node (e.g., workstations and printers) on the network.

Ip – used to be able to talk to a tool on the network, or between different systems.

What’s an interface address?

Network interfaces have two addresses:

A layer 2 address – The MAC address (Also known as Hardware , physical or burned-in address).

A layer 3 address – The Ip (version 4 or 6).

What exactly is it employed for?

Both addresses are utilized to be able to communicate between network devices.

MAC address – to distinctively identify every node (e.g., workstations and printers) on the network.

Ip – used to be able to talk to a tool on the network, or between different systems.

How’s it not the same as an ordinary Ip inside a network?

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<p>By ‘normal’ Ip you most likely mean the gateway (router) exterior IP – this is exactly what you will notice if you’ll search “what is my IP address” in the search engines.</p>
<p>Should you didn’t mean the router – therefore the normal IP addresses are most likely the network <em>interface</em> IPs.</p>
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<h2>More information:</h2>
<p>A MAC address is really a six-byte identifying number that is permanently baked into the firmware from the adapter. It’s readable through the network and also the OS from the device which the adapter is installed. Every adapter includes a unique MAC address.</p>
<p>Because MAC addresses never change, they’re very helpful on stopping undesirable network access by online hackers and intruders. On MAC filtering.</p>
<p>The Ip of network <em>interface</em> is generally an engaged, private Ip that was provided to <a href='~id-120the network interface through the DHCP (server or router).

If device A and device B are on a single network, and also the MAC address of device B is famous by device A – they are able to communicate directly in line with the MAC address.

When the two products are on several systems, they’re going to have to undergo a router and also the communication is performed one gain levels within the TCP/IP model and will also be in line with the IP addresses.

The mapping between your IP and MAC address is performed through the ARP protocol.

Resourse: https://superuser.com/questions/521791/

Linux Network Configuration