Linux Networking Basics

What I Learned

• - Commands like ip, ss, curl, dig, and traceroute answer different parts of the connectivity question.
• - DNS problems can look like application problems until you test name resolution directly.

Why It Matters

Cloud workloads still run on networks and operating systems, so debugging starts with fundamentals.

Mistakes and Challenges

• - It was tempting to jump straight to the cloud console before checking the host.
• - Reading command output carefully mattered more than memorizing flags.

Next Steps

• - Create a repeatable network troubleshooting checklist.
• - Practice with a private EC2 instance and security group rules.