× SIXE

Professional Technical Support
for Debian.

Hardening, monitoring, security updates, incident resolution and migrations. Senior engineers who know your infrastructure, with European support and an SLA.

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root@debian-prod — bash
# System status — Debian 13 Trixie
root@prod:~$ cat /etc/debian_version
13.5

root@prod:~$ uptime
up 268 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
support=sixe # senior engineering, in your language
The foundation

Freedom, security and community.

Debian has been delivering a free, stable operating system for over 30 years. It depends on no company: it's governed by thousands of developers worldwide, with a public social contract and decisions made by the community.

That independence means technical freedom. You choose what you install, how you configure it and when you upgrade. APT and dpkg, open formats, ~59,000 packages and official support for multiple architectures. You stay in control of the system.

And security by default: the Debian security team ships patches continuously and every stable release gets updates for years — the current one is Debian 13 'Trixie', released in August 2025. CERN has been running it in production for over 20 years — from the desktop to the datacentre.

The backing

Debian does the work. SIXE backs it up.

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.

You talk straight to the engineers who know your infrastructure. No middlemen — when you call, the person who answers knows your system.

Working with Ubuntu? That works too. As a Canonical partner, we support your Ubuntu infrastructure as well: take a look at SIXE UP — 360° support that complements your Ubuntu Pro subscription.

Last updated:

Debian in context.

The technical characteristics, side by side. Every distro has its place; here's what Debian brings.

​DebianUbuntu ProRHELSLES
GovernanceCommunityCanonicalIBM / Red HatSUSE LLC
Support per release5 yrs + ELTS10 yrs10 yrs13 yrs
Packages in repos~59,000~30,000~5,000~8,000
Official architectures9+544
Local supportSIXE (EU)SIXE UPSIXESIXE

What we actually do.

No PowerPoints. This is what the support includes.

Hardening & security

CIS Benchmarks for Debian 12 and 13, 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 'Trixie'). 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 and stay with you from start to finish.

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.

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 starts from Debian and adds its own layer: Snap, Ubuntu Pro, Landscape and centralised management tooling. For many teams that's exactly what they need — and as a Canonical partner, we support it too. Debian is more to the point: standard APT, community governance and full control of the system. It's a technical choice — we'll help you with whichever you make.
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 on 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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