Nftables

Conceptual AI-generated datacenter artwork for the Proxmox firewall tutorial; interface indicators are illustrative, not live status.

GNTECH Infrastructure Part 04: Proxmox Firewall, NAT, and Network Isolation

Protect the routing boundary before opening services: inventory firewall ownership, apply a deliberately scoped IPv4 forwarding and NAT lab, test negative paths, and keep a verified rollback.

Conceptual AI-generated editorial cover for GNTECH Infrastructure Part 3; the technical architecture diagram is inside the article.

GNTECH Infrastructure Part 03: Two MikroTik CHR Routers on Hetzner Proxmox

A staged, console-first tutorial for a Hetzner Proxmox host with two routed CHR transit networks and a separate NATed private VM LAN.