Security
Intermediate
How Secure Is My Server? A Self-Audit With Lynis
Lynis 3.1.7 on Debian 13: audit your server, understand the hardening index, fix real findings – and spot the …
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17 min read
Tag
Debian: guides & tutorials
All Serverküche tutorials tagged Debian – hands-on step-by-step self-hosting guides for your own server.
12 tutorials
All tutorials
Basics
Beginner
Understanding systemd
Start services, read logs, schedule tasks: this foundational guide explains systemd with real commands – including your …
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7 min read
Basics
Intermediate
Understanding Docker networks
Why does every app recipe declare a proxy network? This guide explains Docker networks, internal DNS and container …
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8 min read
Basics
Beginner
Understanding Linux Users, Groups & File Permissions
Who is allowed to do what on your server? This foundational guide explains users, groups and file permissions with real …
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8 min read
Security
Intermediate
Restic backups: encrypted and off-site
Off-site backups with Restic: set up encrypted, restore snapshots, prune with retention and automate via a systemd …
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12 min read
Security
Intermediate
Setting up Fail2ban
Fail2ban watches your logs and bans IPs after too many failed attempts – with a safe whitelist for your own address so …
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9 min read
Security
Beginner
unattended-upgrades setup
Automatic security updates on Debian 13: set up unattended-upgrades, decide when the server reboots, and check with a …
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5 min read
Security
Beginner
Setting up a firewall with UFW
Set up a host firewall in minutes with UFW: block everything except SSH, HTTP and HTTPS on your server – without ever …
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5 min read
Containers
Intermediate
Understanding Docker Compose
compose.yaml explained: services, volumes, networks and variables – the Docker vocabulary every app recipe in the …
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12 min read
Containers
Beginner
Installing Docker on Debian
Install Docker Engine and Docker Compose cleanly from the official repository – the foundation for most self-hosting …
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4 min read
Security
Beginner
Hardening SSH access
Key-based login instead of passwords and no root login: the most important moves to harden the front door to your …
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5 min read
Basics
Beginner
First steps with a netcup VPS
Just ordered a netcup VPS? Log in via SSH, install updates, create a sudo user and test it – the safe groundwork on …
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6 min read