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How Secure Is Your Wireless Network? Safeguarding Your Wi-Fi LAN by CCNA Lee Barken - CISSP MCP, CPA

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NoCat

Now that you've configured your Linux machine as an AP, you're probably asking, “Gee, wouldn't it be neat if I had a way to authenticate users and present them with a forced portal (like a redirected Web page), when they try to access my network?” The answer (and very elegant solution) is NoCat. NoCat operates as a captive portal system that lets you set up a gateway machine with some control over who can and cannot access your wireless network.

NoCat operates in a two-tier architecture: Gateway machines bridge the wired and wireless networks (acting like a smart AP); authentication servers are the back-end servers that keep track of user accounts. You can use NoCat's authentication service (auth.nocat.net), or build your own NoCat authentication ...

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