🐧 Unlock the Secrets of Linux Networking Troubleshooting! 🌐

Welcome to the realm of Linux networking, where challenges await and mastery beckons! Let's embark on a journey to unravel these obstacles and arm you with the tools to troubleshoot like a seasoned pro! 🔍

1. Surveying Network Interfaces 📡

   • Command: ifconfig or ip addr

   • Purpose: Unveils vital network interface details such as IP addresses, MAC addresses, and operational status.

2. Probe Network Connectivity 🌐

   • Command: ping

   • Purpose: Validates connectivity to a destination by dispatching ICMP echo requests.

3. Navigating Network Routes 🛣️

   • Command: route or ip route

   • Purpose: Illuminates the labyrinth of routing tables and pathways.

4. Inspecting DNS Configuration 🌐

   • Command: cat /etc/resolv.conf

   • Purpose: Reveals the configuration of the DNS resolver.

5. Testing DNS Resolution 📶

   • Command: nslookup or dig

   • Purpose: Evaluates DNS resolution capabilities for domain names.

6. Scouting Network Listening Ports 🛡️

   • Command: netstat or ss

   • Purpose: Displays active network connections and open ports, guarding the fortress.

7. Surveying Firewall Bastions 🔥

   • Command: iptables -L or firewall-cmd --list-all

   • Purpose: Unveils the guardians of network security – firewall rules.

8. Verifying Port Accessibility 🚪

   • Command: telnet or nc

   • Purpose: Assesses connectivity to specific ports on remote hosts.

9. Analyzing Interface Performance 📊

   • Command: ifconfig -a or ip -s link

   • Purpose: Delves into interface statistics, tracking packets traversing the network.

10. Inspecting ARP Footprints 🐾

    • Command: arp -a

    • Purpose: Examines the ARP cache, mapping IP addresses to MAC addresses.

11. Tracing the Path to Destiny 🗺️

    • Command: traceroute or mtr

    • Purpose: Unravels the journey packets undertake to reach their destination.

12. Delving into Network Bonding/Teaming 🤝

    • Command: cat /proc/net/bonding/*

    • Purpose: Explores bonding interface intricacies, forging alliances for enhanced connectivity.

13. Balancing Network Loads ⚖️

    • Command: ipvsadm -L

    • Purpose: Surveys LVS configuration and statistics, ensuring equitable traffic distribution.

14. Inspecting DHCP Lease 🏠

    • Command: dhclient -v <interface>

    • Purpose: Renews DHCP leases, securing stable network connections.

15. Analyzing Network Traffic with Wireshark 🕵️‍♂️

    • Command: wireshark or tcpdump

    • Purpose: Captures and dissects network packets, unraveling mysteries and anomalies.

Embark on this voyage of discovery, armed with these indispensable commands, and conquer the challenges of Linux networking troubleshooting with confidence! 🚀