Turn Mac into a WiFi Hotspot Using OS X is Internet Sharing

Although free WiFi access points are spreading like wildfire, let’s say you’re on vacation and the hotel you’re staying at only offers internet via a single ethernet port in the wall. It may not be a big deal if you’re traveling alone with one laptop, but you’re most likely staying with friends or family that have their own technology addictions to feed. So what are you going to do about this little situation where there are a mix of PCs, Macs, and iPhones clamoring for contact with the outside world? Patiently take turns? Ha! Good luck relaxing on that vacation.

The answer is in the Sharing pane of System Preferences on your Mac. Mac OS X actually lets you turn your computer into a mock wireless router for others to pick up the signal and connect to the internet. It’s an easy and secure way to get a variety of devices online when WiFi isn’t available. Here’s how to do it:

• 1. Open System Preferences and go to the Sharing pane under the Internet & Network heading.
• 2. On the list of services to the left, select Internet Sharing. Don’t check it quite yet — there’s a few options that need to be set first.
• 3. Depending on what your current internet source is, select it from the menu next to “Share your connection from.” As you can see below, I chose Built-in Ethernet since that is how my Mac is getting online at the moment.
• 4. In the “To computers using” box, select and check AirPort from the list.
• 5. While it is not required, it’s generally a good idea to lock down the WiFi hotspot you’re creating with a password just in case unwanted visitors are tempted to steal your bandwidth. Click on the AirPort Options button to configure these security settings.
• 6. In the window that pops up, type a basic Network Name and check the “Enable encryption (using WEP)” box. Enter an easy to remember (but not easy to guess) password in the boxes below. Remember you will have to provide this password to anyone you want to have access to your Mac’s shared wireless network. Click OK.
• 7. The configuration portion is finished, so the only thing left to do is check the box next to Internet Sharing and enable it. A confirmation message will appear — click Start to complete the process.

Now that your Mac’s internet is being transmitted from your AirPort WiFi card to other devices, you should see an icon like the one pictured at the very beginning of this tutorial in your menu bar. If you do, you’re in business! Virtually any tech gadget with built-in wireless networking (including Windows PCs, iPhones, iPod touches, PSPs, and of course other Macs) should be able to connect successfully when the security password you set is entered.

Note: If this tutorial worked for you (and it should work), please leave a comment below. Thanks.

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