this post was submitted on 19 Oct 2023
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Debian Server Essentials: Setup, Configure, and Hardening Your System (alien.top)
submitted 11 months ago by [email protected] to c/[email protected]
56 comments fedilink hide all child comments
 

I am back with another published article.

Ideogram.ai: penguin in a server room covered in ice and snow, whole picture made out of green matrix style lines of code, cinematic

Please be kind! I am a self-taught Linux user and by no means an expert. My goal with this guide is to help newcomers to Linux have an easier and more secure start.

To all the experts out there, please be kind and do share your tips and observations. I am happy to keep updating the article to make the self-hosting world more secure.

https://nerdyarticles.com/debian-server-essentials-setup-configure-and-hardening-your-system/

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[–] [email protected] 1 points 11 months ago (1 children)

Thanks for the advice!

Why would you leave PermitRootLogin to yes? Doesn’t really matter, if root ca nit login anyways?!

You are right on restarting sshd. That’s a typo…

An other user also mentioned to not fill out the root password and it will disable root + install sudo. Guess I didn’t read the instructions properly. Will definable be adopted.

I agree on importing from Github, but I am unsure how many people have their keys there…

UFW on a virtual machine might not be needed, but also not really harmful. I do like having in on every machine for piece of mind. Also this guide can be used for bare metal installs.

Crowdsec is on the todo list!

Thanks again. I will keep updating my article 😊

[–] [email protected] 1 points 11 months ago (1 children)

Why would you leave PermitRootLogin to yes? Doesn’t really matter, if root ca nit login anyways?!

Just like you don't really need UFW, not really harmful and for piece of mind :)

But to be honest, I am no expert either. I look at your config and think, just leave everything at default besides these twos:

PubkeyAuthentication yes PasswordAuthentication no

Things like

MaxAuthTries 3

don't matter for public key auth.

[–] [email protected] 1 points 11 months ago

Yeah and I went through it with thinking, let’s make it as secure as possible without 100% knowing the effect…

You need password auth for copying your key, don’t you. Unless you import it during the install…