this post was submitted on 30 Jul 2023
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The Reluctant Sysadmin's Guide to Securing a Linux Server (pboyd.io)
submitted 1 year ago by anzo@programming.dev to c/homelab@lemmy.ml
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It scratches the surface of the most obvious stuff. I'd only add running apps in isolation (docker or adduser) and maybe fail2ban.

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[โ€“] Cyber@feddit.uk 2 points 1 year ago (1 children)

This is definitely good advice - and an interesting point on removing ''sudo''

I would add a clarification: moving SSH to cert only prevents password guessing, but also - if possible - only allow specific IPs to access it. This could be down to the country level if roaming a lot. Also use >1 IP so that you don't lock yourself out!

[โ€“] Johnny5@lemm.ee 1 points 1 year ago

Yes! Geo ip filtering got rid of so much brute forcing for me.