Does your government have an Internet kill-switch? Read our guide to Guerrilla Networking and be prepared for when the lines get cut.

By Patrick Miller, David Daw, PCWorld    Jan 28, 2011 5:50 pm

These days, no popular movement goes without an Internet presence of some kind, whether it's organizing on Facebook or spreading the word through Twitter. And as we've seen in Egypt, that means that your Internet connection can be the first to go. Whether you're trying to check in with your family, contact your friends, or simply spread the word, here are a few ways to build some basic network connectivity when you can't rely on your cellular or landline Internet connections.

Do-It-Yourself Internet With Ad-Hoc Wi-Fi

Even if you've managed to find an Internet connection for yourself, it won't be that helpful in reaching out to your fellow locals if they can't get online to find you. If you're trying to coordinate a group of people in your area and can't rely on an Internet connection, cell phones, or SMS, your best bet could be a wireless mesh network of sorts--essentially, a distributed network of wireless networking devices that can all find each other and communicate with each other. Even if none of those devices have a working Internet connection, they can still find each other, which, if your network covers the city you're in, might be all you need. At the moment, wireless mesh networking isn't really anywhere close to market-ready, though we have seen an implementation of the 802.11s draft standard, which extends the 802.11 Wi-Fi standard to include wireless mesh networking, in the One Laptop Per Child (OLPC) XO laptop.

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