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tanvir-infosec/README.md

Hi, I'm Tanvir 👋

IT Infrastructure Administrator | Building toward Cybersecurity & Penetration Testing
Active Directory · Windows Server · Hyper-V · Networking · SQL Server · Azure

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🧭 About me

  • 🖥️ IT Infrastructure Administrator with extensive hands-on experience running Windows/AD environments, virtualization, networking and databases for businesses in the Gulf region
  • 🏗️ Day-to-day: Active Directory & PKI, Windows Server, Hyper-V, SonicWall firewalls, Tailscale/VPN, SQL Server, Azure, self-hosted mail
  • 🔐 Now building on that foundation with Cybersecurity & Ethical Hacking studies, on a PNPT → OSCP track
  • 🕵️ Especially interested in Active Directory attacks & defence, OSINT, and network security — the offensive side of the systems I already run
  • 📝 This profile is where I publish real admin tooling, lab builds and learning notes

🛠️ Tech I work with

Infrastructure

Windows Server Active Directory Hyper-V Linux Azure SQL Server

Networking & Security

SonicWall Tailscale Nmap Wireshark Burp Suite Kali Linux

Scripting

PowerShell Python Bash

📚 Currently learning

  • 🎯 Practical Network Penetration Tester (PNPT) track
  • 🏰 Active Directory enumeration & exploitation
  • 🔎 OSINT methodology and tooling
  • 🧪 Building a home lab for vulnerable-machine practice

📂 Featured work

Repository What it is
sysadmin-scripts PowerShell & Python tools from real infrastructure work — AD, PKI, monitoring (coming soon)
ctf-writeups TryHackMe / HackTheBox write-ups for retired rooms (coming soon)
osint-notes My OSINT methodology, checklists and tool list (coming soon)
homelab Lab architecture, network diagram and setup notes (coming soon)

📊 GitHub stats

GitHub stats

Streak


"Learn in public. Document everything. Break things in the lab, not in production."

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