There is pc hardware that does everything you listed without a problem, is it expensive? Not really at $300. We use Soekris (www.soekris.com) boxes as routers and wireless access points. They are _very_ durable and can more than handle the traffic a small business will throw at it. And considering many of our APs are on top of towers and grain elevators in Northern Minnesota, or worse in the elevator (extremely dusty), and many have been running without issues, beside periodic reboots, for up to 7 years, they are very durable.
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There is pc hardware that does everything you listed without a problem, is it expensive? Not really at $300. We use Soekris (www.soekris.com) boxes as routers and wireless access points. They are _very_ durable and can more than handle the traffic a small business will throw at it. And considering many of our APs are on top of towers and grain elevators in Northern Minnesota, or worse in the elevator (extremely dusty), and many have been running without issues, beside periodic reboots, for up to 7 years, they are very durable.
Check out Ubuntu Center its a LAMP systems but it should fit your needs https://ubuntucenter.bountysource.com/