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"Just because most wireless routers have a firewall to protect you from the internet doesn't mean you're protected from others connected to the same network. Lots of wireless hotspots these days are completely unencrypted, usually so they're easier to connect to (baristas don't need to be giving out the internet password to everyone that walks in). However, this leaves you unprotected against malicious users in the same coffee shop, so there are a few settings you should always make sure to tweak when you're connected to a public network. We're going to show you which settings are the most important ones, as well as how to automatically change your settings to the appropriate level of security every time you connect to a public network."