Linux is an amazing operating system considering how it was originally created. It was a modest program written for one person as a hobby Linus Torvald of Finland. It has grown into a full-fledge 32-bit operating system. It is solid, stable and provides support for an incredible number of applications. It has very powerful capabilities and runs very fast and rarely crashes.
Unfortunately Linux machines are broken almost every day. This happens not because it is an insecure operating system. It contains all the necessary tools to make it very secure. But the truth is. It hasnt become significantly more secure with the increase in popularity. On the other hand, our understanding of the hackers methods and the wide variety of tools and techniques available contributed to help system administrators to secure their Linux computers.
Our goal in this article is to list the most critical situations, and how to prevent an invasion with simple measures.
1- Weak passwords By far the first and most used method used by hackers to try penetrating a Linux system is cracking a password, preferently of the user root. Usually they will target a common user first, and...