mymac=$(ifconfig en0 | grep ether)Ĥ.) Turn your chromecast/other device on and configure it to connect to the network. $ ifconfig | pcregrep -M -o '^+:(|\n\t)*status: active' | egrep -o -m 1 '^+'Ģ.) Show the MAC address for the interface name you retrieved in step 1, en0 in this example: $ ifconfig en0 | grep etherģ.) Store that value in a variable so you can easily set your MAC address back to its original value without rebooting your computer. Stepsġ.) Open up Terminal.app and run the following command to list your machine's active network interface: # Should output something like 'en0' or 'en1' depending on wireless/wired connection Really, there are just two important points you should know about MAC addresses before proceeding:ġ.) MAC addresses are 48-bit, factory-assigned, hexadecimal uids used for organizing a physical network.Ģ.) MAC addresses will typically be reset once your computer/device reboots. If you don't have any idea what a MAC address is, see my Gist on MAC Address Spoofing. You'll need two things besides the device you want to connect to the network, (1) your laptop and (2) some Unix shell flavor. Here's how to add a devices like Chromecast, AppleTV, Roku to a wireless network that requires a browser to authenticate and accept terms and conditions. Luckily, Mac OS X (10.4 - 10.10) makes it very easy to spoof your network card's MAC address. Like many networks, my hotel's network attempts to improve security by using MAC address filtering. While I could call the IT help line, I decided to explore a work-around. This makes it difficult to use my Chromecast with the network, as it doesn't have a means of accessing that splash page. However, it requires users to accept terms and conditions on a splash page via browser interface before they can use the network. The hotel I'm staying in gives its guests free Wifi access. I've been staying in an extended stay hotel for about 3 weeks now.
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