Networking is necessary for DevOps engineers, system administrators, or anyone who manages IT infrastructure. Knowing networking commands allows you to troubleshoot problems, monitor connections, and improve performance. 🛠️ Let's look at some of the most useful commands. 🚀
🔎 Why Are Networking Commands Important?
✔ Check connectivity between devices 🔌
✔ Trace the path of data packets 📡
✔ Monitor network traffic & diagnose issues 📊
✔ Query DNS records & resolve domain names 🌍
✔ Interact with APIs & test web requests 🔄
📝 Networking Commands Cheat Sheet
| 🖥️ Command | 🎯 Purpose | 🌍 Real-Life Example | 💡 Benefits |
ping | Check network connectivity | ping google.com to see if Google is reachable | Quick connectivity check & latency measurement |
traceroute (Linux/macOS) / tracert (Windows) | Trace the route of packets to a destination | traceroute google.com | Identifies network bottlenecks & hops |
netstat | View active connections & network stats | netstat -an to list all open ports | Monitors network activity & detects suspicious connections |
curl | Send HTTP requests & retrieve web content | curl https://example.com to fetch a webpage | API testing, downloading files, and automation |
dig | Query DNS records | dig google.com to get IP & DNS info | Troubleshoots domain resolution issues |
nslookup | Resolve domain names to IP addresses | nslookup example.com | Checks DNS configurations & troubleshooting |
🚀 Best Practices for Using Networking Commands
🔹 Use ping for quick troubleshooting – If a website isn’t loading, check if it’s reachable first. 🌐
🔹 Use traceroute to find network delays – Identify where network slowdowns are happening. 📡
🔹 Monitor connections with netstat – Monitor unusual or unexpected open ports. 👀
🔹 Leverage curl for API testing (You need to setup it up in Windows) – Test REST APIs and check web server responses. ⚙️
🔹 Verify DNS records with dig & nslookup – Troubleshoot and resolve domain issues and check misconfigured DNS. 🔍