Linux.com has posted part 1 of an article about securing a fresh Linux install

Most Linux distros provide a wide variety of server applications, and many network-aware apps are enabled by default when you install the operating system. Before you put your new Linux machine online, there are a number of steps you should take to make your network secure. Use these tips every time you perform a fresh install; none of these steps will help to secure a machine that has already been compromised.

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