Firewall Munich – Managed Firewall & Sophos support
Protection against unwanted access
Only authorized connections get through.
Control of devices & users
Clear permissions instead of open access.
Securing VPN & home office
Secure connection from anywhere.
Restricting applications & countries
Only use what’s relevant to you.
Protection against zero-day threats
Detecting even unknown attacks.
Sophos Firewall
Cloud-native firewalling
30+ years of experience. One dedicated contact. No assembly-line service.
As an IT security expert with over 30 years of IT experience from numerous successful projects, I’m your personal point of contact—not just another ticket system. Our analyses and configurations combine decades of experience with AI-assisted security testing; you receive the results transparently documented. If needed, we have a straightforward direct line to fast additional support, for example via Sophos or distributor support.
Over 30 years of IT experience
Many years of hands-on network security for businesses of all sizes.
Dedicated contact person
One consistent contact instead of changing ticket handlers.
Cover during vacation & illness
Your firewall remains supported even if your contact person is unavailable.
Custom firewall concepts
No off-the-shelf standard package—rules tailored to your operations.
Fast support
Short response times for security-relevant incidents.
Support in Munich
On-site service and regional contacts for businesses in Munich and the surrounding area.
AI-assisted analyses
Security tests with documented results, transparently traceable.
Managed Firewall for specific business groups
Law firms
Effectively protect confidential client matters.
Medical practices
Secure patient data in a GDPR-compliant way.
Real estate companies
Securely connect locations and customer data.
Social institutions
Clearly define sensitive data and access rights.
SMEs
Firewall concepts that grow with your business.
Multiple locations
Secure site-to-site networking, even across multiple branches.
Home office
VPN access that’s secured just as strictly as the office network.
Hospitality & event venues
Guest Wi-Fi separated from security-critical systems.
All firewall services. Centrally managed. No security gaps.
Comprehensive network protection with centralized management—proactive, scalable, and cloud-ready.
Cloud firewall management
Centralized firewall management across Azure, AWS, and OpenStack—secure communication between cloud, locations, and systems. Consistent policies instead of siloed solutions, with full transparency across all environments.
Consistent security policies
One central rule set for all firewalls and cloud environments—from custom country-blocking rules to automated application control, with API management and consistent policies across all systems, automatically documented and fully traceable at any time.
Sophos XGS & endpoint protection
Sophos XGS firewalls with Xstream and Zero-Day Protection, Sophos Central endpoint security, and VPN for secure access—we also verify every configuration with proven security check suites such as Greenbone, even for smaller base setups.
What Managed Firewall at Gabler actually includes
We handle setup, monitoring, updates, rule maintenance, and ongoing support for your firewall—not just delivering a device.
How your Managed Firewall setup works
A clear process instead of a black box—you always know which step your project is in.
Analysis of your existing infrastructure
We review your existing infrastructure, current firewall rules, and network devices—the basis for a tailored concept.
Assessment of security risks
Identify vulnerabilities and open access points before they become a problem.
Selecting the right firewall
We choose the right solution—Sophos or OPNsense with sensible add-on modules like Zenarmor—and weigh cost-effectiveness against the security gain together with you.
Setup & migration
Firewall setup and takeover of existing rules—documented and without downtime.
VPN & user configuration
Secure access for home office and mobile employees, with fine-grained user permissions.
Monitoring & updates
Ongoing monitoring and updating of protection bundles, documented SSH watchdogs beyond the device GUI.
Ongoing support
Rule maintenance, regular pentests, support, and a dedicated contact person—long-term.
AI-powered firewall automation
Respond faster, protect better
Modern firewalls use machine learning to detect anomalies early and automatically adjust rules—our analyses also combine these AI-assisted evaluations with decades of experience, documented and traceable.
Rule maintenance & monitoring
We automate, monitor, and document firewall rules—efficiently, audit-proof, and compliant. If needed, we also bring in fast additional support via a direct line to Sophos or distributor support.
MoreIntelligent firewalls
We plan, integrate, and optimize intelligent firewall technologies—for targeted improvements and measurably secure IT structures.
MoreAI-assisted attack detection
We detect, analyze, and prevent attacks using modern AI technologies—supplemented by regular AI-assisted security tests, with results we provide to you transparently.
MoreWhy we rely on Sophos
Instead of speaking abstractly about “a firewall”: this is the specific Sophos technology we work with—and the business value it delivers for you.
Sophos XGS firewalls
Next-gen hardware for businesses of any size, from small offices to multiple locations.
Sophos Central
Central management of firewall and endpoints—one dashboard instead of many separate tools.
Xstream Protection
Deep inspection of traffic, including encrypted connections.
Network Protection
Segmentation and control of internal traffic.
Web Protection
Filtering harmful and unwanted web content.
Zero-Day Protection
Detecting unknown threats before damage occurs.
Enhanced Support
Extended vendor support for a fast response in an emergency.
VPN & user profiles
Secure remote access with clear role and permission concepts.
Managed Firewall – all services at a glance
Central firewall management
Sophos Endpoint Security
Cloud Firewall (Azure/AWS)
Firewall VPN
Email Security Firewall
AI-assisted defense
Network segmentation
Firewall monitoring & reporting
Founder, Dipl.-Inf. Michael Gabler
Has been managing firewall and network security projects for businesses in Munich for over 30 years—from initial analysis to ongoing support.
+49 151 20795000hello@gablersystemtechnik.comBook a call with us
Request firewall consulting
Gabler Systemtechnik GmbH
Scheidegger Strasse 8
81476 Munich
Start firewall management!
From an outdated single-site firewall to a managed Sophos solution
A mid-sized company with around 40 workstations and two home-office locations was using an outdated firewall without central management and without documented rules. After analyzing the existing infrastructure, we cleaned up the rules, set up a Sophos XGS firewall with Xstream Protection, and configured secure VPN access for all home-office workstations.
Since then, Gabler has continuously monitored the firewall, applied updates, and is immediately reachable in the event of security-relevant incidents.
Firewall isolation prevents uncontrolled AI data leakage
A customer in the social sector wanted to integrate an external AI solution where data leakage to third countries could not be reliably ruled out—far too great a risk given the customer’s highly sensitive data. Instead, we strictly segmented the AI application behind the firewall and replaced it with a locally operated model on dedicated hardware: no uncontrolled external access, full control over data flow.
Was umfasst professionelles Firewall-Management?
Professionelles Firewall-Management umfasst initiale Konfiguration, laufende Regelpflege, Patch-Management, Monitoring und revisionssichere Dokumentation. Gabler Systemtechnik sorgt für ein einheitliches Regelwerk über alle Firewalls hinweg – zentral gesteuert, automatisiert und jederzeit transparent.
Was ist eine Next-Generation Firewall?
Eine Next-Generation Firewall (NGFW) geht über klassische Paketfilterung hinaus: Deep Packet Inspection analysiert den Datenverkehr auf Anwendungsebene, Anwendungskontrolle erlaubt granulare Regeln, und KI-basierte Bedrohungserkennung reagiert automatisch auf Anomalien – deutlich wirksamer als herkömmliche Firewalls.
Funktioniert Firewall-Management auch in Cloud-Umgebungen?
Ja. Gabler Systemtechnik integriert Firewall-Lösungen nahtlos in OpenStack und Microsoft Azure. API-gesteuertes Firewall-Management, automatisierte Regelpflege und Cloud-native Architekturen ermöglichen skalierbare Sicherheit ohne manuelle Eingriffe – auch für hybride Infrastrukturen.
Was kostet professionelles Firewall-Management?
Die Kosten hängen von Unternehmensgröße, Anzahl der Standorte und gewünschtem Funktionsumfang ab. Wir erstellen nach einer kurzen Bestandsaufnahme ein transparentes, planbares Angebot – ohne versteckte Zusatzkosten und mit klarer Abwägung zwischen Wirtschaftlichkeit und Sicherheitsgewinn, etwa bei kostenpflichtigen Zusatzmodulen.
Kann eine bestehende Firewall übernommen werden?
In der Regel ja. Wir prüfen zunächst die vorhandene Konfiguration, übernehmen bewährte Regeln und schließen Sicherheitslücken – unabhängig davon, ob bereits Sophos, OPNsense oder ein anderes Fabrikat im Einsatz ist.
Wie schnell ist ein Firewall-Austausch möglich?
Bei akutem Handlungsbedarf richten wir kurzfristig eine Übergangslösung ein und planen den vollständigen Austausch parallel – meist ist eine neue Firewall innerhalb weniger Tage einsatzbereit, ohne Betriebsunterbrechung.
Wie funktioniert VPN?
Ein VPN (Virtual Private Network) baut eine verschlüsselte Verbindung zwischen Ihren Mitarbeitenden im Homeoffice oder unterwegs und Ihrem Firmennetzwerk auf. Wir richten dies über Sophos Connect oder OPNsense mit IPsec ein – mit Geräteprofilen und feingranularen Rechten statt pauschalem Netzwerkzugriff, konsequent nach Zero-Trust-Prinzipien.