Systems, networks, and useful tools.

I build networking and systems tools, backend infrastructure, and developer tooling.

Go is my main language. I also use Python, C for lower-level learning, and occasionally mess around with Zig or Rust. For web stuff, I like Svelte and Astro.

I am currently working on tethux, an in-development network emulator. Alongside it, I work through systems-programming projects at 42 Vienna and build smaller developer tools.

This site is also where I put project writeups, technical notes, experiments, and school/42 documentation.

Most of my code is on GitHub.

HTL systems security assignment

Anti Hardening

A distributed systems security writeup covering Kubernetes, PostgreSQL, JWT authentication, secrets, backups, Tailscale, and application hardening.

HTL networking and security writeup

WLAN Setup and Security

Wireless network configuration and security analysis covering DHCP, client isolation, WPA handshakes, and Wireshark.

HTL networking writeup

Capturing Network Traffic

Packet capture and traffic analysis using Wireshark, RouterOS port mirroring, ICMP, HTTP, and VoIP.

School presentation · practical guide

Docker Things

A practical introduction to container images, Dockerfiles, Compose, remote contexts, and Docker Swarm using one small Go and NGINX application.

HTL Windows security writeup

Security Testing a Windows Server

Windows Server security testing with SMB and RDP analysis, Wireshark, hardening controls, and credential-security tooling.

HTL Windows Server writeup

Secure Data Storage on Windows Server

Windows Server storage security using PowerShell automation, BitLocker, permissions, SMB shares, and network access controls.

HTL security writeup · CTF

Baby's First CTF

A documented CTF walkthrough covering network discovery, service enumeration, credential attacks, and Linux exploitation.

HTL Linux security writeup

Hardening a Linux Webserver

Hardening a containerized Linux web server with SSH keys, NGINX, authentication, TLS, and local DNS.

HTL Linux security writeup

GNU/Linux - Securing Access

Linux access control using sudo policies, password policy, SSH hardening, PAM, and one-time passwords.

HTL Linux administration writeup

GNU/Linux - Setting up a multi-user environment

Building and securing a multi-user Linux environment with containers, permissions, networking, and SSH keys.

HTL IT security writeup

Cryptography

A practical introduction to symmetric and asymmetric encryption, hashing, integrity checks, and OpenSSL.