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GNU/Linux server are great, cost-effective way for businesses to store and share data. GNU/Linux is open-sources, so it provides plenty of resources and community cooperation . However, that also brings security concerns. If you’re going to run a GNU/Linux server, you NEED to know how to secure it properly. 1. Updates the server The first thing you used do is update the OS to the latest version. Most VPS or cloud-based server update when you deploy them but still update. Run this commands based on the OS you are running. If you don’t know then run: ’ cat /etc/issue `. This will tell you. ...