Passerelles Numériques Cambodia (PNC)

BUI LIN

Systems, Networking & Cloud Cybersecurity Specialist

Architecting resilient cloud environments on AWS EC2, hardening enterprise Linux infrastructure (RHEL/Ubuntu), designing robust Cisco network topologies, and optimizing production MariaDB database clusters.

Uptime SLA
99.98%
AWS EC2
Isolated VPC
Security
UFW / RSA 2048
Status
Live Online
Launch Console Explore Topology
BUI LIN
Click For Action 🔥
bash - builin@aws-node:~
Type 'help' for commands
Welcome to BUI LIN Shell v3.5 Enterprise Edition
Type 'help', 'neofetch', or 'skills'.
builin@aws:~$

AWS Enterprise Cloud Topology

2-Server isolated cloud layout hosting this live environment.

Public Subnet

Node 1: AWS EC2 Public Gateway

Ubuntu 24.04 LTS • Apache2 • Certbot SSL

✔ Port 80/443 Active

• Git Auto-Deployment Pipeline

• Reverse Proxy Router

Private Subnet

Node 2: Private MariaDB Cluster

Isolated VPC • Port 3306 Restricted

✔ Zero Public Internet Access

• Internal Bind IP (10.0.2.x)

• Cambodia Gazetteer Database Schema

Certifications & Industry Badges

Verified badges issued by Red Hat and Cisco Systems.

RH104 - RHA Ver. 9.1

Red Hat Training: Linux Fundamentals

Red Hat Academy

Red Hat Certificate
Issued: Sep 29, 2026 Verify Credly Badge
Cisco Networking Academy

CCNA: Introduction to Networks

Passerelles Numériques Cambodia

CCNA Certificate
Issued: Sep 06, 2026 Verify Credly Badge

Technical Competencies Matrix

Core competencies in operating systems, cloud, networking, and databases.

Enterprise Linux Administration

Red Hat RHEL 9.1 & Ubuntu Server 94%
Bash Shell Scripting & Automation 88%

AWS Cloud & Cisco Networking

AWS EC2, VPC, Security Groups 90%
Cisco Routing, Switching & VLANs 86%