In this case, the MAC address acts as a reference manual for networking devices like the router so that these devices know the identity of the other network devices they are communicating with or, in this case, assigning IP addresses. MAC serves a unique role in identifying these network interfaces through system protocols and programs.įor example, through DHCP ( Dynamic Host Control Protocol), a network interface is assigned an IP address by a network router automatically. The wireless and Ethernet network modules are examples of commonly used network interfaces on a Linux operating system. In addition to the virtual IP address, each interface is also associated with a hardware MAC address that it can be necessary to know.Every network interface on your Linux operating system distribution is associated with a unique number called MAC ( Media Access Control). But it’s not a guarantee as there can be other connected ethernet interfaces as well! Finding the MAC Address of the Linux Box This is yet another hint that “eth0” is the interface that we’re interested in. It means that the system detects an ethernet cable in the port and moreover, it can also see another device plugged into it at the other end. Below that, we see the word “inet” followed by the IP address that we’re looking for.Īs a point of interest, we see that the flags for “eth0” in this case include “LOWER_UP”. We see that “eth0” is the second entry in the list. We just need to find the one we identified in the first step. This will show us a list of all the existing network interfaces.
But to be sure, we type in the following command: The overwhelming majority of the time, it will be called “eth0”. Whether you’re working remotely via SSH or logged in directly on the console, we first need to find out which network interface is connecting to the Internet on Linux. Step 1: Get the name of the Network Interface Getting the IP Address of your Linux Server In this article we’ll see various ways to hardware and virtual addresses of our networking interfaces. It’s not just virtual addresses, but MAC addresses as well. Or the address from which outgoing communications are issued.
Find the address to which incoming communications are sent. To the average person “Get a system’s IP address” has a very simple meaning. Whatever the reason, the issue is made a bit complicated by the fact that a typical Linux box will have multiple networking interfaces. Or you’re trying to create a connection between two servers that you’ve connected to remotely and need to get the IP details of one to enter into the other. Say you’re creating a certificate and need to enter the details. There can be many reasons why you want to know your IP address when connecting to a Linux terminal. How to Find your IP Address and MAC Address in Linux Posted on July 10, 2017
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