01
Systems Administration
Linux-first server operations, hardening, patching, and reliable service management.
PORTFOLIO / ONLINE
LET'S CONNECT INFRASTRUCTURE / NETWORKS / AUTOMATION
Systems.
Networks.
Automation.
I build secure infrastructure, automate operations, and turn complex systems into reliable platforms.
01
SECURE BY
DESIGN
02
BUILT TO
AUTOMATE
03
ALWAYS
OBSERVABLE
NETWORK TOPOLOGYLIVE / 01
SECURE NODE US-WEST
EDGE GLOBAL
37.7749° N
122.4194° W
122.4194° W
GLOBAL INFRASTRUCTUREROTATION: 0.28°/S
Conceptual topology visualization · not live network telemetry
FIG. 01 — SYSTEM OVERVIEW
01 / OPERATOR PROFILEIDENTITY: VERIFIED
THE PERSON BEHIND THE PLATFORM
Meet the
operator.
Infrastructure works best when it is secure, understandable, and built to last. That is the standard I bring to every system I touch.
MG
Mike GealonSYSTEMS & NETWORK ADMINISTRATOR
OPERATOR DOSSIERMG / 001
DESIGNATIONSystems & Network Administrator
MISSIONDesigning, securing, automating, and maintaining modern infrastructure environments.
FOCUS AREASLinux systems · Network operations · VPS administration · Security-focused homelab
OPERATING PRINCIPLEReliable by design. Observable by default. Automated where it matters.
CREDENTIALSCertifications and experience details to be added
02 / CAPABILITIESCORE SYSTEMS / 04
WHAT I BRING ONLINE
Capabilities.
A practical toolkit for building and maintaining secure, dependable infrastructure.
02
Network Engineering
Practical network design, DNS, secure remote access, and resilient connectivity.
03
Security Operations
Defense-in-depth controls, least privilege, firewall policy, and a security-minded homelab.
04
Automation & Tooling
Small, dependable scripts that remove repetitive work and make operations observable.
FIELD TOOLKIT
03 / INFRASTRUCTURE MAPARCHITECTURE / INTERACTIVE
A SECURE PATH, BY DESIGN
Infrastructure.
Follow the path from the public edge to private services. Select any component for its role.
REFERENCE ARCHITECTUREFLOW / INBOUND
DESIGN PRINCIPLE
Each layer has a clear purpose. Keep public exposure deliberate, private services isolated, and access encrypted.
PUBLIC EDGE ENCRYPTED PATH PRIVATE ZONE
Reference design only. Components and controls are adapted to each environment.
04 / COMPLETED OPERATIONSMISSION LOG / 03
ILLUSTRATIVE MISSION TEMPLATES
Mission log.
Sample architecture briefs; replace these templates with verified projects and outcomes before publishing.
01
Private Network Gateway
Establish secure, dependable remote access to private services.
ARCHITECTURE
Hardened VPS → WireGuard tunnel → private network
OUTCOME
A private-by-default access layer with a clear path to operate and extend.
UbuntuWireGuardUFWDNS
02
Homelab Service Platform
Build a dependable foundation for self-hosted applications.
ARCHITECTURE
Cloud edge → reverse proxy → isolated services
OUTCOME
A modular platform that keeps services organized, maintainable, and observable.
LinuxCloudflareDockerMonitoring
03
Operations Automation
Reduce repetitive administration and improve consistency.
ARCHITECTURE
Scheduled tasks → scripts → actionable logs
OUTCOME
Repeatable workflows with fewer manual steps and clearer operational feedback.
PythonBashGitLinux
05 / GITHUB COMMAND CENTERPUBLIC SIGNAL / LIVE
OPEN SOURCE INTELLIGENCE
Code in the open.
Live public profile and repository data, fetched directly from GitHub with a graceful fallback.
Building in public.
Learning in every commit.
Explore the tools, experiments, and projects behind the operations.
DATA SOURCEapi.github.com/users/mikegilkim
VISIT GITHUB 06 / INTERACTIVE TERMINALLOCAL SIMULATION / READ ONLY
ISSUE A COMMAND
Talk to the
system.
A small command interface for the curious. Try a command or type help to see what is available.
MIKE@OPS-CENTER: ~ SECURE SHELL
$ secure channel established
TRY:
07 / ESTABLISH CONNECTIONCHANNEL STATUS / OPEN
READY WHEN YOU ARE
Let's build
something reliable.
Have an infrastructure challenge, collaboration idea, or a role in mind? Send a transmission.