$ whoami

"I'm a fixer. I fixed it." — Moss, The IT Crowd (and also me, after a 3-hour BGP debugging session)

I'm Duc Mai — a Network Engineer based in Vietnam who builds and automates resilient networks, writes about what I learn, and contributes to open-source along the way.

• 🎓 Network Engineer | Open-Source Contributor | Technical Blogger
• 🔭 Currently working toward CCIE EI and CEH.
• ✍️ I write detailed technical posts on my blog — no fluff, just the real config and the real reasoning behind it

🛠️ Tech Stack

Networking

Languages & Scripting

Tools & Frameworks

✍️ Latest Blog Posts

• 💯 March 4, 2026 — SPAN, RSPAN, and ERSPAN: Traffic Mirroring for Network Analysis
• 🔥 March 2, 2026 — NetFlow and Flexible NetFlow: Traffic Visibility and Flow Analysis
• 💫 March 1, 2026 — Control Plane Policing (CoPP): Protecting the Route Processor
• 🚀 February 27, 2026 — AAA on Cisco IOS: RADIUS, TACACS+, and Enterprise Configuration
• 🌮 February 25, 2026 — TrustSec and MACsec: Identity-Based Access Control and Layer 2 Encryption

➡️ All posts on ducmt.netlify.app

📊 GitHub Stats

🌿 Contribution Graph

⏱️ Coding Activity

🐱 My GitHub Data

📦 250.2 kB Used in GitHub Storage

🏆 110 Contributions in 2026

💼 Open to Work

📜 33 Public Repositories | 🔑 6 Private Repositories

I'm an Early 🐤

🌞 Morning    1191 commits   ███████░░░░░░░░░░░░░░░░░░   29.58 %
🌆 Daytime    1194 commits   ███████░░░░░░░░░░░░░░░░░░   29.65 %
🌃 Evening    1426 commits   █████████░░░░░░░░░░░░░░░░   35.41 %
🌙 Night       216 commits   █░░░░░░░░░░░░░░░░░░░░░░░░   05.36 %

📅 Most Productive on Monday

Monday       735 commits    █████░░░░░░░░░░░░░░░░░░░░   18.25 %
Tuesday      522 commits    ███░░░░░░░░░░░░░░░░░░░░░░   12.96 %
Wednesday    654 commits    ████░░░░░░░░░░░░░░░░░░░░░   16.24 %
Thursday     518 commits    ███░░░░░░░░░░░░░░░░░░░░░░   12.86 %
Friday       516 commits    ███░░░░░░░░░░░░░░░░░░░░░░   12.81 %
Saturday     607 commits    ████░░░░░░░░░░░░░░░░░░░░░   15.07 %
Sunday       475 commits    ███░░░░░░░░░░░░░░░░░░░░░░   11.80 %

I Mostly Code in Python

Python        19 repos    ██████████████████░░░░░░░   73.08 %
HTML           3 repos    ███░░░░░░░░░░░░░░░░░░░░░░   11.54 %
PowerShell     1 repo     █░░░░░░░░░░░░░░░░░░░░░░░░   03.85 %
Vim Script     1 repo     █░░░░░░░░░░░░░░░░░░░░░░░░   03.85 %
Shell          1 repo     █░░░░░░░░░░░░░░░░░░░░░░░░   03.85 %

Last Updated: 09/08/2026 UTC

💳 Terminal Business Card

Meet me in the terminal:

npx duc-mt

🔐 PGP Key

For encrypted contact: D2F1 F373 9A4E 465E 737C 1F38 F9E9 1488 183E D044 or look up [email protected] on a public keyserver.