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Changing the IP Address on a Mac OS X is Easy - We Tell You How

How to Change the IP Address on Mac OS X
If you own a Mac computer and you are completely mystified regarding how to change the IP address on it by yourself, you can now keep all your worries aside, as our mini guide will help you complete this task in a few simple steps.
Padmini Krishna
Last Updated: Feb 8, 2018
A Quick Tip
The easiest way to obtain your computer/laptop's public IP address, irrespective of what operating system you are using, is to open the Google website on your web browser and type "IP Address" in the search box. The first result that will be instantly returned will be your very own public IP address.
It is needless to stress on the importance of IP addresses, as everyone knows that without the correct IP configuration, it is impossible to connect to the Internet today. That Apple computers and laptops traditionally never followed the IP standard, but instead, connected to other devices by making use of a different, proprietary network layer protocol called Appletalk, even until very recently, however, is a lesser-known fact.

Owing to the ubiquitous nature of the Internet Protocol (IP), Apple along with the release of OS X 10.6 in 2009, discontinued the trend of encouraging the implementation of Appletalk by omitting its support in all devices since. Unfortunately, because of this, Mac users are not as familiar with the nuances of IP as users of other systems, and those who need to find, configure, or modify their Mac's IP address at a short notice might be puzzled regarding how to go about it.

The good news is that it is not as baffling as it seems, and is in fact a simple task that can be carried out in a few easy steps.
How to Configure/Modify Your Mac's IP Address
Step 1
Launch the Apple menu by clicking on the Apple icon located at the top-left corner of your home screen.

Step 2
Select System Preferences from the drop-down menu that opens.

** Alternatively, the System Preferences icon from the dock at the bottom of the screen can be located and selected. It is the one that has the Apple icon with a switch beside it.

Step 3
Inside System Preferences, click on the Network icon. It is the globe-shaped icon that is located in the third row from the top.

Step 4
In the Network window that opens, from the list on the left side, select the network that you are connected to. It may be a Wi-Fi network or even an Ethernet connection.

Step 5
You will see a button located towards the bottom-right of the window labeled Advanced... Click on it.

Step 6
Out of the many tabs that are available at the top of the window, select TCP/IP.

Step 7
In this tab, find the first drop-down menu (the one adjacent to Configure IPv4) and change the selected option to ✔ Manually. This will allow you to modify your IP address, Subnet Mask, and Router (or if you are setting up a new connection, to manually configure the network).

Step 8
Save your changes by clicking on the button labeled Apply, which is located at the bottom-right corner of the window.

Thus, as you can see, the simplest method to change the IP address of your Mac computer or laptop is a task that will hardly take five minutes of your time. The best part is, if you are a new Mac user, and if you are confused about what any icon/button/tab/function represents, you can always click on the button labeled Assist Me... located at the bottom of your screen, and it will come to your rescue.
How to Perform this Task from the Terminal
An alternative method to configure or change the IP address, for those who are either feeling really adventurous, or else those who are genuinely passionate about coding, is to use the Terminal. This command line interface application that can be used to monitor as well as tweak system settings is located in the Utilities section of the Applications folder. Here is how you can change your Mac's IP address from the Terminal.

Suppose you are connected to public Wi-Fi, or otherwise even a LAN, and you wish to change the IP address configured on your device, but you do not wish to explicitly specify the IP address your device should be assigned. You just wish to know how to get a different IP address assigned to your device. Here is how it can be done.

Method 1:
Type the following in the Terminal to request the DHCP server to assign your device an IP address.

sudo ipconfig set en1 DHCP

** en1 refers to the interface through which your OS X device connects to Wi-Fi. If you are using an Ethernet connection, replace "en1" with "en0".

Method 2:
(a) Your device will be assigned a different IP address if you turn the interface down and then up once again. This can be done by typing the following in the Terminal.

sudo ifconfig en1 down ;
sudo ifconfig en1 up


(b) If you wish to explicitly specify the IP address that you set for your Mac device, here is how it can be done. Type the following in the Terminal.

sudo ipconfig set en1 INFORM 192.168.2.1
You can replace "192.168.2.1" with the IP address of your choice.


(c) To check what IP address configuration your device currently holds, type either of the following in the Terminal.

ipconfig getifaddr en1
or
ifconfig |grep inet


We hope you found our mini guide helpful. In case you have any queries, do not hesitate to leave a comment.