How to Find and Change Your MAC Address on OS X

How to Find and Change Your MAC Address on OS X

Each network card on your computer has a built-in unique MAC (Media Access Control) address that can be used to identify your computer. This is usually fine, but it is possible to change it natively in OS X.

If you are running Windows or Linux you can change your MAC address easily on those platforms as well, though we should note that this is more of an advanced topic and most people shouldn’t change their MAC addresses unless they really need to.

How to find your MAC Address

OS X provides a quick and easy way to find your MAC address. Just hold down the Option key and click the Wi-Fi icon in the menu bar:

The ‘Address’ portion with all the colons is your MAC address. This is your physical MAC address, which for most people is the address you want. However, if your address has been changed, you can check what address your computer is actually using to communicate with by firing up a Terminal and running:

ifconfig en0 | grep ether

This will output your MAC address for the hardware interface en0, which for most Macs is used for Wi-Fi. You can check which interface is used for wireless by holding down the Option key and clicking the Wi-Fi icon in the menu bar, which will quickly show you what device you are using to access the Internet:

How to Change Your MAC Address

If you want to change your MAC address and have a specific one in mind, you can set it with:

sudo ifconfig en0 ether aa:bb:cc:dd:ee:ff

This will set your MAC address for en0. If you have a Mac that also has an ethernet port, you may need to use en1.

How to Get a Random MAC Address

If you’re going for privacy, randomizing your MAC address is probably the best option. This command will do it automatically:

openssl rand -hex 6 | sed 's/\(..\)/\1:/g; s/.$//' | xargs sudo ifconfig en0 ether

This will generate and set a new MAC address for en0 every time you run it. The changes made from both these commands will be reverted when you restart, so this is not permanent. If you want, you can make a script and set it to run on startup, giving you a new one for each session.

Keep in mind that after you edit your MAC address you may have network problems, so it is a good idea to restart your Wi-Fi after changing it.

Can I take my Roku player with me when I travel, or at a school or hotel?

Can I take my Roku player with me when I 

travel, or at a school or hotel?

Yes. Roku's Hotel and Dorm connect feature will allow you to connect to other networks
(even secured networks), such as a school, business, or hotel. 

Hotel and dorm connect is available on the following Roku models: Roku 4 (4400), Roku 3
(4200, 4230), Roku 2 (4210), Roku Streaming Stick (3500).

To use Roku's Hotel and Dorm feature, your Roku player must be on Roku's software version
OS 7.0 or later. 
Most Roku players don’t have OS 7.0 out of the box, but don't worry, 7.0 will be installed automatically during your initial guided setup,  so make sure you set up your Roku player
prior to traveling.  Before you get to your hotel or dorm, make sure you have the following:

• Your Roku player, power adapter and remote
• Audio and video cables (depending on your Roku player model – composite, component, HDMI)
• Optional Ethernet cable (depending on your Roku player model)

Once you arrive at your destination and hook up your Roku player, follow the below
instructions:

Step 1.  Go to Settings>Network>Wi-Fi



Step 2: Locate your wireless network from the list of available networks.

After selecting your network, you'll see 2 green checks, and one red X next to 
"...the internet".



Once you get a red “X” the Hotel and Dorm dialog box will appear.  
Select “I am at a hotel or college dorm”.

Next, you'll see a screen with instructions to follow on your smartphone, tablet or 
laptop.



From your smartphone, tablet or laptop, go to Wi-Fi settings and select the Wi-Fi 
signal in step 2 on your TV screen. (This step will vary depending on the device 
you are using to connect.)



Finally, just enter the password located in step 3 on your TV screen.

After you enter the password and press connect, open up a web browser and enter the
required information. 
This information may be a room number, password, name or action the needs to taken
by the user.