× SIXE

Professional Technical Support
for Debian.

Hardening, monitoring, security updates, incident resolution and migrations from Ubuntu, Red Hat or SUSE. Our engineers, your infrastructure, no licensing fees.

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root@debian-prod — bash
# System status — Debian 12 Bookworm
root@prod:~$ cat /etc/debian_version
12.9

root@prod:~$ uptime
up 847 days, 14:22, 2 users, load: 0.12, 0.08, 0.05

root@prod:~$ apt list --upgradable 2>/dev/null | grep security | wc -l
0 # Patches applied by SIXE

root@prod:~$ systemctl is-active nftables sshd fail2ban wazuh-agent
active
active
active
active

root@prod:~$ cat /etc/sixe/support.conf
plan=enterprise
sla=4h
license_cost=0 # Debian is free
The problem Linux licensing has become a business.

Ubuntu Pro charges €€€/year per server. RHEL, €€€/year. SUSE, €€€. With 50 servers, that's tens of thousands per year just for an operating system.

And it's not just money. It's lock-in: forced snap in Ubuntu, mandatory subscriptions in RHEL since IBM closed the CentOS sources, SCC registration in SUSE. More control, less freedom.

The irony is that Ubuntu is built on Debian. Every Ubuntu package starts as a Debian package. Canonical takes the community's work, adds a proprietary layer on top and charges you for it.

The solution Debian does the work. SIXE backs it up.

Debian has been running what matters for decades. It's the foundation Ubuntu was built on, it doesn't depend on any company, and it's maintained by a community with no shareholders to answer to. CERN has been running it in production for over 20 years — not because it's free, but because it works.

What Debian has always been missing is someone who picks up the phone when something breaks at 3 AM. SIXE has been maintaining Linux infrastructure in production for over 15 years — now also for Debian. Patches, hardening, upgrades, incidents, migrations. With SLA and real people on the other end.

No middlemen, no bot tickets. Engineers who know your infrastructure and pick up the phone.

Prefer to stay on Ubuntu? If you need extended Ubuntu Pro support, check out SIXE UP — 360° coverage for your Ubuntu infrastructure, with support that goes beyond what Canonical offers.

Last updated:

Debian vs. the alternatives.

What you see when you put the numbers side by side.

​DebianUbuntu ProRHELSLES
Licence0 €€€€€€€€€€
GovernanceCommunityCanonicalIBM / Red HatSUSE LLC
LTS Support5 años + ELTS10 años (paid)10 años (con pago)13 años (con pago)
Packages~59.000~30.000~5.000~8.000
Lock-inNoneSnap, LandscapeSubscriptionSCC
Ubuntu baseYes—No (Fedora)No (openSUSE)
EU SupportSIXECanonical (UK)Red Hat (US)SUSE (DE)
What we actually do.

No PowerPoints. This is what the support includes.

Hardening & security CIS Benchmarks for Debian 12, SSH hardening, nftables firewall, permission auditing, fail2ban. Security patches applied within 72 hours with prior staging tests.
Proactive monitoring Wazuh, Zabbix or Prometheus integrated into your Debian infrastructure. Configured alerts, status dashboards, periodic reporting. We catch issues before they hit.
Version upgrades Planning and execution of version upgrades (Debian 11 → 12 → 13). Staging environment, regression testing, coordinated maintenance windows. No Monday morning surprises.
Incident resolution with SLA Critical incidents, performance issues, kernels, drivers. Direct access to senior engineers who know your environment. No tickets, no bots, no unnecessary escalations.
Containers & databases Docker, Podman, Kubernetes on Debian. PostgreSQL, MariaDB, Redis, RabbitMQ. Performance tuning, automated backups, high availability. If you're already running it on Ubuntu, it works the same on Debian — with less noise.
Migrations to Debian, done right.

From Ubuntu, RHEL or SUSE. Proven process, minimal disruption. If it's the other way around and you need to migrate to Ubuntu, we do that too.

01 Audit Package, service, dependency, kernel and driver inventory. We identify incompatibilities upfront.
02 Staging Replica environment to validate the full migration. Documented and tested rollback plan.
03 Execution Cutover during agreed maintenance window. Service, data and configuration migration with functional validation.
04 Post-migration New system hardening, monitoring setup, runbooks and dedicated support during the first weeks.
Frequently asked questions.
What's the difference between Debian and Ubuntu for servers?
Ubuntu is built on Debian and adds Canonical's layer: Snap as default package manager, Ubuntu Pro as subscription model, Landscape for centralised management. If that adds value for you, fair enough. If you prefer a system that doesn't tie you to any vendor and where APT is still APT, Debian is the direct choice.
Is it hard to migrate from Ubuntu to Debian?
It's the easiest migration in the Linux ecosystem. They share APT/dpkg, the same directory structure and most configurations. Differences are in snaps, netplan and cloud-init, which are replaced by Debian equivalents. SIXE handles everything: staging, validation and rollback.
Do you support Debian on non-x86 architectures?
Yes. Debian officially supports over 9 architectures: ARM64, POWER (ppc64le), s390x (IBM Z) and RISC-V. SIXE has direct experience with Linux en IBM Power Systems.
Let's talk about your infrastructure.

Tell us how many servers you have, which distro you're running and what concerns you. We'll propose a concrete plan.

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