David Bombal (YouTube channel)

What the channel covers

David Bombal's channel discusses Linux, Python, ethical hacking, networking, CCNA, virtualisation and other IT topics, with new videos every week. The channel blends technical tutorials with a large number of interviews with security researchers, network engineers and industry figures.

Those interviews are a big part of its value. Guests explain how they got into the field, what they do day to day and what skills matter now. Alongside them sit practical videos on Wi-Fi and home networking, Wireshark, Kali Linux, Docker and Python for network automation, plus coverage from events such as Black Hat, DEF CON and Cisco Live.

Playlists to start with

• David Bombal Interviews: career and technical conversations with practitioners.
• Learn Linux in 180s: very short Linux lessons, good for building a daily habit.
• Linux, Docker and Windows: longer hands-on material.
• Home Networking: practical networking you can try on your own router.
• Def Con and Black Hat 2026: talks and interviews from security conferences.
• Quantum Computing and Networking: for something further ahead.

Who it suits

Students in networking, security or IT programmes, people working in support or NOC roles who want to move up, and developers who want to understand networks better. The interviews suit anyone deciding whether security or networking is the right path.

How to learn without getting stuck in tutorial loops

Interviews are inspiring; labs are where skills form.

1. For every interview you watch, do one lab. Capture traffic in Wireshark, configure a VLAN in a simulator, or script a task in Python.
2. Build a small lab: a couple of virtual machines or a simulator is enough to practise most of what he shows.
3. Write down the career advice that fits your situation and turn it into a three month plan.
4. Stay legal and ethical: practise hacking techniques only on your own lab or permitted platforms.

Pair it with on Sefism

• The Network engineering roadmap and its cheat sheet give you a structured route.
• The Cybersecurity roadmap and cheat sheet for the security side.
• Tools he uses that are in the library: Wireshark User's Guide, Kali Linux Documentation and Cisco Networking Academy.
• Moving up from support: How do I move from a NOC job to a network engineer role?
• A final year project idea: Network Configuration Backup and Drift Detection for University Campus Networks.

Best for: networking and security learners who want both hands-on tutorials and real career stories from the field.