Dmytro Zheleznov

Education

Taras Shevchenko National University of Kyiv (KNU)

Faculty of Information Technology

Network Engineering & System Administration

Focus on network infrastructure, cybersecurity, and computational physics simulations.

Technical Skills

Networking

TCP/IP, OSPF, BGP, VLAN, VPN

Linux Systems

Ubuntu, Debian, Bash Scripting

Cloud

DigitalOcean, Azure, VPS Management

Security

UFW Firewall, SSL/TLS, SSH Hardening

Web Servers

Nginx, Reverse Proxy, DNS

Research

Quantum ESPRESSO, DFT, HPC

Key Projects

2D SiGe Electronic Structure

Scientific research using DFT (Density Functional Theory) and Quantum ESPRESSO. Performed geometry optimization and band structure calculation of Silicene-Germanene monolayer. Confirmed buckled structure and existence of Dirac cone (semi-metal).

Quantum ESPRESSO Computational Physics HPC

VPS & Web Infrastructure

Deployed and secured a Linux VPS on DigitalOcean. Configured custom DNS records, Nginx as a web server, and implemented SSL/TLS encryption via Let's Encrypt Certbot. Hardened security with UFW firewall.

Linux Nginx SSL/TLS DNS

Private WireGuard VPN

Built a high-performance private VPN server using WireGuard protocol. Configured IP forwarding, UDP port rules in UFW, and peer authentication to ensure secure and encrypted internet access.

VPN WireGuard Networking

Internet Speedtest

Власний сервер для тестування швидкості каналу (Hosted in Frankfurt). Реалізовано на Docker + LibreSpeed.

Docker Nginx Proxy