Sascha Bühr
I connect worlds: from physical security to modern cybersecurity and IT operations.
About me
I’m training as a System Integration Specialist with a focus on Windows Server environments and core network services. In my IPAM project, I built an isolated lab domain (Windows Server 2022 with AD DS, DNS, DHCP) and evaluated a DDI/IPAM solution. Key goals were reliable DNS/DHCP integration, clean operational processes, role-based access control (RBAC), reporting, and traceable changes (audit). I also bring experience from coaching/NLP and facilitation—useful for requirements discovery, alignment, and clear communication in IT projects.
Security Lab & Hardware
Hands-on analysis of attack surfaces with specialized lab hardware.
🐬 Flipper Zero
Sub-GHz protocols, RFID/NFC (authorized scenarios only).
🍍 WiFi Pineapple
Wireless auditing & rogue AP simulation.
📻 HackRF One
SDR analysis across the RF spectrum.
👾 Pwnagotchi
Passive WPA handshake capture (lab/training).
IT Skillset
🪟 Windows Server / AD DS
Windows Server 2022 lab domain, AD DS fundamentals, OU/user structure, roles & permissions (RBAC).
🌐 DNS
Forward/reverse zones, A/PTR consistency, FQDN/DNS suffixing, troubleshooting with nslookup.
📦 DHCP
Scopes/leasing, reservations, options (gateway/DNS/suffix) and end‑to‑end validation.
🗺️ IPAM / DDI
DDI/IPAM evaluation: DNS/DHCP integration, reporting, auditability, data quality beyond spreadsheets.
🧱 Operations & security mindset
Core ports/firewall basics for DNS/DHCP/LDAP/Kerberos/HTTPS, backup/restore thinking, monitoring fundamentals.
🧪 Lab engineering
Reproducible PoC testing in isolated environments (VirtualBox/lab networks) with solid documentation.
Communication & delivery
Practical soft skills from coaching/NLP and facilitation—applied to IT projects.
🧭 Requirements discovery (basics)
Clarify needs, prioritize, and translate into actionable steps.
🗣️ Facilitation
Run structured meetings, capture outcomes, define clear next steps.
🤝 De‑escalation
Solution-focused communication and calm handling in stressful situations.
📝 Clear documentation
Document systems cleanly and explain technical topics in simple terms.
Qualifications
Certified in Cybersecurity (CC)
ISC² (2024) - Security fundamentals.
LPIC-1
Linux Professional Institute - Linux administration.
NLP Practitioner
Communication & social engineering awareness.
Security Professional
Physical security & legal basics (IHK/VSW).
Projects
🗺️ IPAM (DDI) PoC – replacing spreadsheets
Built an isolated lab domain (WS2022 AD DS/DNS/DHCP) and evaluated a DDI/IPAM solution including RBAC, reporting, and auditing.
🏠 Home Lab Infrastructure
Raspberry Pi based environment with Docker, reverse proxy, and Cloudflare Zero Trust/Tunnel.
Legal
Legal Notice
Sascha Bühr
Hauptstraße 90
76547 Sinzheim, Germany
Email: [email protected]
Privacy Policy
Host: Personal Raspberry Pi 4 (Sinzheim, Germany).
Infrastructure: Cloudflare Tunnel & Tailscale Funnel for secure delivery. No trackers.