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In the realm of DevOps, networking plays a crucial role in ensuring seamless communication between various components of an IT infrastructure. Whether you’re managing Linux servers, deploying applications, or ensuring site reliability, understanding networking fundamentals is essential.
You Should Know:
1. Basic Networking Commands:
ping: Check connectivity between your machine and a remote server.ping google.com
– `ifconfig` or
ip addr: Display network interface configurations.ifconfig ip addr show
netstat: Display network connections, routing tables, and interface statistics.netstat -tuln
traceroute: Trace the path packets take to reach a destination.traceroute google.com
2. Advanced Networking Commands:
ss: A utility to investigate sockets.ss -tuln
nmap: Network exploration tool and security scanner.nmap -sP 192.168.1.0/24
tcpdump: Packet analyzer for network troubleshooting.tcpdump -i eth0
3. Network Configuration:
nmcli: Command-line tool for controlling NetworkManager.nmcli connection show
route: Display or modify the IP routing table.route -n
4. Firewall Management:
ufw: Uncomplicated Firewall for managing iptables.ufw allow 22/tcp
iptables: Administration tool for IPv4 packet filtering and NAT.iptables -L -v -n
5. DNS Troubleshooting:
dig: DNS lookup utility.dig google.com
nslookup: Query Internet domain name servers.nslookup google.com
What Undercode Say:
Networking is the backbone of any DevOps operation. Mastering these commands and tools will not only enhance your troubleshooting skills but also ensure that your infrastructure remains robust and reliable. Whether you’re configuring network interfaces, diagnosing connectivity issues, or securing your network, these commands are indispensable. Keep practicing and exploring more advanced networking concepts to stay ahead in the ever-evolving IT landscape.
For further reading, consider exploring:
References:
Reported By: Kinge Hans – Hackers Feeds
Extra Hub: Undercode MoN
Basic Verification: Pass ✅
