Tagged: firewall

27 April 2026 Fortinet FortiManager FortiGate Proxmox Lab Firewall

Building a FortiManager Lab on Proxmox — Part 4: A Lab Edge FortiGate VM in Front of FortiManager

Part 4 of the FortiManager-on-Proxmox series. Builds a FortiGate-VM as the lab edge in front of FortiManager, with four NICs mapped to the lab bridges, a scoped policy set, FortiGuard pinhole, local-in policy hardening, and the deny-with-log rule that proves the boundary works.
26 April 2026 linux networking iptables nftables firewall security migration

iptables to nftables: Migrating Production Firewalls Without Downtime

A working engineer's guide to moving from iptables to nftables on production Linux firewalls — the mental model shift, where iptables-translate misleads you, atomic ruleset swaps, and a clean rollback strategy that means a bad migration costs you seconds, not your weekend.