this post was submitted on 06 Apr 2022
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Linux
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Linux is a family of open source Unix-like operating systems based on the Linux kernel, an operating system kernel first released on September 17, 1991 by Linus Torvalds. Linux is typically packaged in a Linux distribution (or distro for short).
Distributions include the Linux kernel and supporting system software and libraries, many of which are provided by the GNU Project. Many Linux distributions use the word "Linux" in their name, but the Free Software Foundation uses the name GNU/Linux to emphasize the importance of GNU software, causing some controversy.
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Don't allow root ssh access, you could also change the ssh port to one that's not 22. Also you could disallow ssh password login and allow key-based authentication only.
Also try to set it up without installing sudo , which will eliminate a lot of privilege escalationvulnerabilities.