Securing systems is a continuous battle for sysadmins. There's no such thing as secure but there are some things you can do to better protect your systems and your users. And, just because there is a global pandemic, security issues didn't go away or subside in the least in 2020. Security requires constant vigilance and reliance on developers and programmers to deliver secure code, security updates, and documentation on how to better protect our systems and users.
Since so many sysadmins work alone or in small groups, finding good security information and implementing it is difficult. Tight budgets and the demands of daily production add to that difficulty. Our aim in posting these tutorials is to help you to quickly identify trouble spots and to provide information that will help you in your quest to better secure your systems.
The following 13 posts were some of the most read security tutorials for 2020.