kernel-hardening-checker VS How-To-Secure-A-Linux-Serve

https://github.com/a13xp0p0v/kconfig-hardened-check and also spot check with http://kernsec.org/wiki/index.php/Kernel_Self_Protection_Pro...

Then can also see if the distro is doing things to harden the binaries (relro, nx, canaries, aslr, pie, etc) ; https://www.trapkit.de/tools/checksec/

I want to point out I like this script to run some additional security confirmation checks on the kernel (pretty advanced, you need to know what stuff is, your brain needs to be on) https://github.com/a13xp0p0v/kconfig-hardened-check/

> In short it’s all about control, privacy, and security, in that order.

I am going to strongly urge you to consider changing that order and move *security* to the first priority. I have long run my own servers, it is much easier to setup a server with strong security foundation, than to clean up afterwards.

As a beginner, you should stick to a well known and documented Linux server distribution such as Ubuntu Server LTS or Fedora. Only install the programs you need. Do not install a windowing system on it. Do everything for the server from the command line.

Here are a few blog posts I have bookmarked over the years that I think are geared to beginners:

"My First 5 Minutes On A Server; Or, Essential Security for Linux Servers": An quick walk through of how to do basic server security manually [1]. There was a good Hacker News discussion about this article, most of the response suggests using tools to automate these types of security tasks [2], however the short tutorial will teach you a great deal, and automation mostly only makes sense when you are deploying a number of similar servers. I definitely take a more manual hands-on approach to managing my personal servers compared to the ones I professionally deploy.

"How To Secure A Linux Server": An evolving how-to guide for securing a Linux server that, hopefully, also teaches you a little about security and why it matters. [3]

Both Linode[4] and Digital Ocean[5] have created good sets of Tutorials and documentation that are generally trustworthy and kept up-to-date

Good luck and have fun

[1]: https://sollove.com/2013/03/03/my-first-5-minutes-on-a-serve...

[2]: https://news.ycombinator.com/item?id=5316093

[3]: https://github.com/imthenachoman/How-To-Secure-A-Linux-Serve...

[4]: https://www.linode.com/docs/guides/

[5]: https://www.digitalocean.com/community/tutorials

I can't claim to have been through it but this is sitting on my bookmarks folder and looks very useful: https://github.com/imthenachoman/How-To-Secure-A-Linux-Serve...

My only tip I haven't seen mentioned here is be very careful using docker with ufw, as by default docker will effectively override ufw port restrictions if it is told to expose a port.