FreeBSD & NetBSD Consulting

Deep Expertise in FreeBSD, NetBSD, Jails, ZFS, and BSD Networking

Professional administration, tuning, security, high availability, and migration services for FreeBSD and NetBSD environments — from firewalls and storage servers to embedded systems, high-performance networking, and mission-critical infrastructure.

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Our FreeBSD & NetBSD Services

FreeBSD and NetBSD remain top choices for performance-critical, secure, and stable systems — powering firewalls (pfSense/OPNsense), storage appliances (TrueNAS/TrueNAS SCALE), web servers, routers, and embedded devices. Zwiegnet brings decades of hands-on BSD experience to keep your systems rock-solid while offering clear paths to modernize or integrate with Linux.

Our FreeBSD & NetBSD consulting services include:

FreeBSD Administration & Tuning – Full system setup, loader.conf/kernel tuning, ZFS optimization (ARC/L2ARC/SLOG, compression, dedup), jails creation/management, bhyve virtualization, and performance benchmarking.
NetBSD Expertise – Embedded and portable systems, pkgsrc package management, rump kernels, Xen dom0/domU, and cross-platform portability (many architectures: amd64, arm64, riscv, sparc64, etc.).
Security Hardening & Compliance – Hardened kernel, Capsicum, audit, pf/ipfw/firewall rules, MAC policies, securelevel, and STIG/NIST alignment for FreeBSD & NetBSD.
Networking & Firewall Excellence – pf (Packet Filter) rulesets, CARP high availability, ALTQ traffic shaping, IPsec, WireGuard, and integration with OPNsense/pfSense ecosystems.
High Availability & Clustering – CARP/VRRP, ZFS replication, bhyve live migration, and failover configurations for zero-downtime services.
Jails & Containers – FreeBSD jails (resource limits, VNET, devfs rules), ezjail/iocage/jail.conf, and migration to Linux containers (Docker/Podman/LXC) when desired.
ZFS Mastery – Advanced pool design, snapshots, send/receive, boot environments, encryption, and performance tuning on both FreeBSD and NetBSD (ZFS on NetBSD).
Migration & Hybrid Environments – BSD to Linux migrations (or vice versa), integration with Linux servers (NFS/SMB, LDAP/Kerberos, CUPS), and hybrid BSD/Linux deployments.
Troubleshooting & Emergency Support – Panic analysis, core dumps, dtrace/systemtap, network debugging, and rapid recovery from hardware or software failures.

Ideal for: network appliance vendors, storage providers, ISPs, security-conscious enterprises, embedded developers, legacy BSD shops, and anyone needing rock-solid, performant Unix-like systems outside the Linux mainstream.

Located between Madison and Milwaukee, Wisconsin since 2009 — direct access to BSD specialists with deep experience across FreeBSD, NetBSD, OpenBSD, and their integration with modern Linux environments.

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