🐧 Unlock the Secrets of Linux Networking Troubleshooting! 🌐

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2 min read

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! πŸ”

  1. Surveying Network Interfaces πŸ“‘

    • 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 πŸ›£οΈ

    • 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 πŸ“Ά

    • Command: nslookup or dig

    • Purpose: Evaluates DNS resolution capabilities for domain names.

  6. Scouting Network Listening Ports πŸ›‘οΈ

    • Command: netstat or ss

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

  7. Surveying Firewall Bastions πŸ”₯

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

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

  8. Verifying Port Accessibility πŸšͺ

    • Command: telnet or nc

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

  9. Analyzing Interface Performance πŸ“Š

    • 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 πŸ—ΊοΈ

    • 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 βš–οΈ

    • 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 πŸ•΅οΈβ€β™‚οΈ

    • 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! πŸš€

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