Network & Security Administration
CommunityHarden NixOS network security and access.
Authorkressnerd
Version1.0.0
Installs0
System Documentation
What problem does it solve?
NixOS-based deployments often suffer from insecure defaults and fragmented network configurations. This Skill provides a structured, end-to-end approach to firewall configuration, SSH hardening, VPN setup (WireGuard/Headscale), TLS/ACME certificate management, DNS, and system hardening to reduce attack surface and simplify secure operations.
Core Features & Use Cases
- Comprehensive firewall configuration with support for iptables and nftables, including per-interface rules and logging.
- SSH hardening for server and client components, with strong authentication and key management.
- VPN capabilities via WireGuard and Headscale for secure site-to-site or remote access.
- TLS/ACME certificate automation, including DNS-01 challenges and certificate management strategies.
- DNS configuration, system hardening and monitoring to maintain compliance and security posture.
- Real-world use case: securely connect multiple hosts across environments with automated configuration and verifiable hardening.
Quick Start
Run a baseline security hardening pass by auditing firewall rules, SSH configuration, VPN setup, TLS certificates, and DNS protection on a NixOS host.
Dependency Matrix
Required Modules
None requiredComponents
Standard package💻 Claude Code Installation
Recommended: Let Claude install automatically. Simply copy and paste the text below to Claude Code.
Please help me install this Skill: Name: Network & Security Administration Download link: https://github.com/kressnerd/nix-config/archive/main.zip#network-security-administration Please download this .zip file, extract it, and install it in the .claude/skills/ directory.
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