https://blog.noobygames.de/tags/linux/Recent content in Linux on Tobias Theel | Senior Software EngineerHugo -- gohugo.ioenSat, 09 May 2026 00:00:00 +0000https://blog.noobygames.de/blog/secure-ssh-server/Sat, 09 May 2026 00:00:00 +0000https://blog.noobygames.de/blog/secure-ssh-server/Every publicly reachable Linux server is under constant brute-force pressure. If you leave SSH open with password authentication and the root account enabled, it is not a question of if an attacker gets in — it is a question of when. This guide walks you through four concrete steps that eliminate the most common attack surface: Create an SSH key pair on your local machine Create a dedicated sudo user on the server Deploy your public key to the server Harden sshd: disable password login and block root login By the end you will log in exclusively with your private key, through a non-root account that can escalate privileges with sudo.