MOC Linux Administration and Security

This map groups core operational notes for secure Linux administration in research, cluster, and infrastructure-heavy environments.

Datacenter administration overview

• Linux Administration in Datacenters
• Linux Host Hardening Stack Patterns
• Proxmox
• NixOS Flakes Dendritic System Setup

Automation and fleet operations

• SaltStack
• SaltStack reactors and orchestration
• NixOS flake branches
• NixOS flake hosts
• Checkmk

Service and access management

• systemd
• OpenSSH
• NixOS core leaves
• NixOS shell leaves

Security controls

• nftables
• fail2ban
• SELinux
• AppArmor
• auditd
• NixOS core security leaf
• NixOS secrets leaves

NixOS host composition

• NixOS desktop host composition
• NixOS server host composition
• NixOS server leaves
• NixOS persistence leaves

Logging, telemetry, and detection

• chrony
• rsyslog
• osquery
• Lynis
• CrowdSec
• Wazuh
• Checkmk

Related maps

• MOC DevOps Automation and Configuration Management
• MOC Computing DevOps and Software
• MOC Web Development and Application Architecture
• MOC Open Science Data and Knowledge Graphs
• MOC Garden Operations and Standards
• Garden