How to: 4. Learn Networking & Security
A **network protocol** is an established set of rules that determine how data is transmitted between different devices in the same network. Essentially, it allows connected devices to communicate with each other, regardless of any differences in their internal processes, structure, or design. 

Here you will need to know how a network works, how to configure **firewalls**, understand how **DNS** works, **OSI model**, IP addresses, ports, etc.

**Resources:**

- [OSI Model Explained](https://www.cloudflare.com/en-gb/learning/ddos/glossary/open-systems-interconnection-model-osi/)
FREE
- [Computer Networking: A Top-Down Approach](https://www.amazon.com/Computer-Networking-Top-Down-Approach-7th/dp/0133594149)
book
[Video Content](https://www.youtube.com/playlist?list=PLByK_3hwzY3Tysh-SY9MKZhMm9wIfNOas)
video
- [TCP/IP and Networking Fundamentals for IT Pros](https://www.pluralsight.com/courses/tcpip-networking-it-pros)
Pluralsight course
- [DevSecOps : Master Securing CI/CD | DevOps Pipeline](https://www.udemy.com/course/devsecops/)
Udemy course
- [Hands-On Security in DevOps: Ensure continuous security, deployment, and delivery with DevSecOps](https://www.amazon.com/Hands-Security-DevOps-continuous-deployment/dp/1788995503)
Book
- [Securing DevOps: Security in the Cloud](https://www.amazon.com/Securing-DevOps-Security-Julien-Vehent/dp/1617294136/)
Book
- [Professor Messers Network+ course](https://www.professormesser.com/network-plus/n10-008/n10-008-video/n10-008-training-course/)
FREE
- [How DNS works](https://howdns.works/)
- [How DNSSEC works](https://howdnssec.works/)
- [How HTTPS works](https://howhttps.works/)