Linux server administration
Installation, hardening, updates, monitoring and troubleshooting for AlmaLinux, Rocky, Debian and Ubuntu. Reliable operations instead of surprises.
Learn moreServices
As an IT service provider I come to you in Vienna and the surrounding area and work remotely for all of Austria: IT support, network administration, servers, Microsoft 365, software development. You get a fixed contact person, documented work and clear prices.
Remote services
Via secured access to your systems, with alignment by video call, ticket or chat.
Java development
Backends, REST APIs, automation tools and integrations in Java. Experience from leading a multi-year cloud gaming project with proxy infrastructure.
Learn morePHP development
PHP 8 with a focus on security: WHMCS and Plesk modules, payment and registrar integrations, REST APIs and custom web applications.
Learn moreWebsite development
Company websites that load in a fraction of a second, rank on Google and comply with GDPR. Custom-built or based on a CMS.
Learn moreAnsible automation
Playbooks, roles, AWX and Ansible Automation Platform: reproducible servers, automated patch days and rollouts across multiple stages.
Learn moreCloud and virtualisation
Proxmox VE, XCP-ng, KVM, Docker, Swarm and Kubernetes: private cloud platforms, container operations and hybrid architectures that fit the budget.
Learn moreNetwork administration and firewall
OPNsense firewalls, VLANs, VPN with WireGuard and IPsec, routing up to BGP, enterprise switches and the analysis of stubborn faults.
Learn moreIT security and backup
Server hardening, two-factor and passkeys, monitoring with alerting and backups that actually work when it matters.
Learn moreIT support and managed services
Your external IT department: helpdesk, updates, monitoring and user management, billed based on effort or with an hour bundle, without a monthly fee.
Learn moreMicrosoft 365 and email
Tenant, domain, email migration, Teams, OneDrive and multi-factor authentication set up cleanly instead of guessing in a web console for days.
Learn moreWindows Server and Active Directory
Active Directory, group policies, file servers, Remote Desktop and Hyper-V: build, migrate and secure Windows Server environments.
Learn moreWebsite maintenance
Updates with staging, backups, malware protection, load time and monitoring so your website stays secure and fast.
Learn moreIT consulting
Vendor-neutral and understandable: inventory, system selection, cloud or own server, security and costs under control.
Learn moreOn site in Vienna and the surrounding area
Installation, maintenance and emergency help directly at your premises, with a travel flat rate of €35 within Vienna.
Wi-Fi and access points
Stable Wi-Fi for office, practice, workshop or home: site survey, access points, guest Wi-Fi and mounting on site in Vienna.
Learn moreNAS setup
Central storage with RAID, user permissions, secure remote access and a backup concept that survives ransomware.
Learn moreOn-site server maintenance
Hardware diagnostics, disk and RAID replacement, firmware, UPS and server room check: I come to your servers in Vienna and the surrounding area.
Learn moreNetwork installation
From patch panel to firewall: I set up your company network on site, cleanly cabled, segmented and documented.
Learn moreIT emergency and on-site support
Server down, network dead, suspected ransomware? Fast help remotely and on site in Vienna, followed by a plan so it does not happen again.
Learn morePC and workstation service
Set up new workstations, transfer data, connect printers, home office with VPN, upgrade and secure devices, right at your premises in Vienna.
Learn morePhone system and VoIP
From the ISDN system to modern VoIP telephony: 3CX or cloud system, SIP trunk, IP phones, softphones and number porting.
Learn moreHow we work together
Request
Describe your needs briefly via the form, WhatsApp or the live chat.
Assessment
Within one business day you receive an assessment with effort, price and a proposed date.
Implementation
I do the work personally, remotely via secured access or on site, and keep you updated throughout.
Handover and invoice
Documented handover, then an invoice from KernelHost GmbH with convenient payment via kernelhost.com.