What is Network Engineering?

Network Engineering is a vital role in today’s digital world, serving as the backbone of reliable, secure, and efficient network infrastructures.

Core Responsibilities Include:

🔹 Network Infrastructure: Designing and maintaining physical and virtual networks.
🔹 Communications: Ensuring seamless data transfer between systems and users.

🔹 Troubleshooting: Diagnosing and resolving network issues.

🔹 System Administration: Managing and configuring servers, devices, and systems.

Mastering these skills is essential for CCNA, Cybersecurity, and IT infrastructure careers.

You Should Know:

Essential Network Engineering Commands & Tools

1. Basic Network Troubleshooting (Linux/Windows)

• Ping Test (Check connectivity):

  ping google.com
  

• Traceroute (Track packet path):

  traceroute google.com  Linux
  tracert google.com  Windows
  

• Check Open Ports:

  netstat -tuln  Linux
  netstat -ano  Windows
  

2. Cisco Router/Switch Configuration (CCNA Focus)

• Enter Privileged Mode:

  enable
  

• View Running Config:

  show running-config
  

• Configure OSPF Routing:

  router ospf 1
  network 192.168.1.0 0.0.0.255 area 0
  

3. Firewall & Security (ASA/FortiGate Basics)

• Allow HTTP Traffic (ASA):

  access-list OUTSIDE permit tcp any any eq 80
  

• Block IP (FortiGate CLI):

  config firewall address
  edit "Block_IP"
  set subnet 192.168.1.100 255.255.255.255
  next
  end
  

4. Linux Network Configuration

• Set Static IP (Ubuntu):

  sudo nano /etc/netplan/01-netcfg.yaml
  

  network:
  ethernets:
  eth0:
  addresses: [192.168.1.10/24]
  gateway4: 192.168.1.1
  nameservers:
  addresses: [8.8.8.8, 8.8.4.4]
  

Apply changes:

sudo netplan apply

5. Windows Network Diagnostics

• Reset TCP/IP Stack:

  netsh int ip reset
  

• Flush DNS Cache:

  ipconfig /flushdns
  

What Undercode Say:

Network Engineering is the foundation of IT infrastructure, requiring expertise in routing, security, and troubleshooting. Whether working with Cisco devices, firewalls, or Linux servers, mastering CLI commands and network protocols is crucial. Automation (Python, Ansible) and cloud networking (AWS, Azure) are becoming essential skills.

Expected Output:

A well-structured, actionable guide for aspiring network engineers, covering real-world commands and configurations.

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References:

Reported By: Nasir Amin – Hackers Feeds
Extra Hub: Undercode MoN
Basic Verification: Pass ✅

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