Listen to this Post
Introduction:
The cybersecurity skills gap continues to widen, with millions of unfilled positions globally, yet the barrier to entry often feels insurmountable due to costly certification paths. Cisco Networking Academy has quietly dismantled this barrier by offering a comprehensive suite of ten enterprise-grade courses—completely free of charge—with official certificates and digital badges that carry genuine industry weight. From network automation with Python to threat hunting in Security Operations Centers (SOCs), this 2026 curriculum represents a full-spectrum technical education that rivals expensive bootcamps, delivered through hands-on labs and real-world scenarios that translate directly into job-ready competencies.
Learning Objectives:
- Master network automation and programmability using Python, REST APIs, and DevOps methodologies through the DevNet Associate track.
- Build, configure, and troubleshoot enterprise-grade routed and switched networks spanning LAN, WAN, and wireless infrastructures.
- Develop defensive security operations skills, including threat detection, incident response, endpoint protection, and security policy implementation.
You Should Know:
- DevNet Associate – Automating the Network with Python and APIs
Modern network engineering is no longer about CLI commands alone—it demands code. The DevNet Associate course bridges the gap between traditional networking and software development, teaching you how to treat infrastructure as code. You will learn to automate network operations securely using Application Programming Interfaces (APIs), integrate DevOps practices, and deploy applications on Cisco platforms.
Step-by-Step Guide: Building Your First Network Automation Script
This guide demonstrates how to use Python and REST APIs to retrieve interface status from a Cisco device—a fundamental task for any network automation engineer.
Step 1: Set Up Your Python Environment
Linux/macOS python3 -m venv netauto_env source netauto_env/bin/activate Windows (Command Prompt) python -m venv netauto_env netauto_env\Scripts\activate Install required libraries pip install requests
Step 2: Write the Python Script
Create a file named `get_interfaces.py`:
import requests
import json
Disable SSL warnings for self-signed certificates (lab environments)
requests.packages.urllib3.disable_warnings()
Device credentials and URL
device_ip = "192.168.1.1"
username = "admin"
password = "Cisco123"
url = f"https://{device_ip}/restconf/data/Cisco-IOS-XE-1ative:native/interface"
RESTCONF headers
headers = {
"Accept": "application/yang-data+json",
"Content-Type": "application/yang-data+json"
}
Send GET request
response = requests.get(url, auth=(username, password), headers=headers, verify=False)
if response.status_code == 200:
interfaces = response.json()
print(json.dumps(interfaces, indent=2))
else:
print(f"Error: {response.status_code} - {response.text}")
Step 3: Execute and Interpret
Run the script and analyze the JSON output containing interface configurations and statuses. This same pattern extends to Ansible playbooks for configuration management and Docker for containerized network functions. The course prepares you for the DevNet Associate certification (200-901) and roles such as network automation engineer and network developer.
- CCNA Trilogy – From Network Fundamentals to Enterprise Automation
The three-course CCNA sequence forms the backbone of any networking professional’s education. CCNA: Introduction to Networks (ITN) covers the architecture, structure, and functions of the Internet and computer networks, including IP addressing, Ethernet concepts, and basic router/switch configuration. CCNA: Switching, Routing, and Wireless Essentials (SRWE) dives into VLANs, inter-VLAN routing, Spanning Tree Protocol (STP), EtherChannel, and wireless LAN configuration. CCNA: Enterprise Networking, Security, and Automation (ENSA) introduces WAN technologies, QoS, VPNs, and critically, network programmability and automation using APIs and configuration management tools.
Step-by-Step Guide: Configuring VLANs and Inter-VLAN Routing on a Cisco Switch
Step 1: Access the Switch via Console or SSH
SSH from Linux/macOS/Windows (PowerShell) ssh [email protected]
Step 2: Enter Global Configuration Mode and Create VLANs
enable configure terminal vlan 10 name Sales exit vlan 20 name Engineering exit
Step 3: Assign Ports to VLANs
interface fastEthernet 0/1 switchport mode access switchport access vlan 10 exit interface fastEthernet 0/2 switchport mode access switchport access vlan 20 exit
Step 4: Configure Inter-VLAN Routing on the Multilayer Switch
interface vlan 10 ip address 192.168.10.1 255.255.255.0 no shutdown exit interface vlan 20 ip address 192.168.20.1 255.255.255.0 no shutdown exit ip routing
Step 5: Verify Configuration
show vlan brief show ip interface brief show ip route
This hands-on approach mirrors the Packet Tracer and real-equipment labs integrated into the courses. Completing all three courses prepares you for the CCNA certification exam and roles like network administrator or network engineer.
3. Network Security – Hardening the Infrastructure
The Network Security course provides a deep dive into designing, implementing, and supporting secure networks. It covers network threat identification, mitigation strategies, secure device access, and assigning administrative roles. This is the essential next step for CCNA-level professionals seeking to specialize in security.
Step-by-Step Guide: Implementing SSH and ACLs for Secure Device Access
Step 1: Configure SSH on a Cisco Router
enable configure terminal ip domain-1ame mynetwork.local crypto key generate rsa modulus 2048 username admin privilege 15 secret Cisco123 line vty 0 4 transport input ssh login local exit ip ssh version 2
Step 2: Create an Access Control List (ACL) to Restrict Management Access
access-list 10 permit 192.168.1.0 0.0.0.255 line vty 0 4 access-class 10 in exit
Step 3: Apply ACL to Block Unauthorized Traffic
access-list 100 deny ip any host 192.168.1.100 access-list 100 permit ip any any interface gigabitEthernet 0/0 ip access-group 100 in exit
Step 4: Verify SSH and ACL Status
show ip ssh show access-lists show ip interface gigabitEthernet 0/0
These configurations form the bedrock of network defense, ensuring that only authenticated administrators can access devices and that malicious traffic is filtered at the perimeter.
- CyberOps Associate with NDG Labs – The SOC Analyst’s Playbook
The CyberOps Associate course, supplemented by Network Development Group (NDG) labs, is designed to prepare you for the Cisco Certified CyberOps Associate certification. You will monitor network traffic, detect intrusions, analyze host-based and network-based threats, and apply security policies and procedures. The NDG labs provide a virtualized environment where you can practice these skills safely.
Step-by-Step Guide: Network Traffic Analysis with Wireshark (CyberOps Lab)
Step 1: Launch the NDG Lab Environment
Access the CyberOps Associate course from your NetAcad homepage and click on the “Assignments” tab to launch the NDG lab environment.
Step 2: Capture Network Traffic
Within the lab VM, open a terminal and start a packet capture:
sudo tcpdump -i eth0 -w capture.pcap
Step 3: Analyze the Capture with Wireshark
wireshark capture.pcap
Apply filters to isolate specific traffic:
– `http` – view all HTTP traffic
– `tcp.port == 443` – view HTTPS traffic
– `arp` – view Address Resolution Protocol traffic
– `ip.addr == 192.168.1.10` – filter by IP address
Step 4: Identify Suspicious Patterns
Look for:
- Unusual outbound connections to external IPs
- Large data transfers during off-hours
- Repeated failed login attempts (RDP, SSH, FTP)
- Malformed packets or protocol anomalies
Step 5: Generate a Security Report
Document your findings, including timestamps, source/destination IPs, and the nature of the traffic. This mirrors the workflow of a Tier 1 SOC analyst. The NDG labs are accessible on-demand and provide six months of unlimited access for a nominal fee, though many institutions include them at no additional cost.
- Endpoint Security and Threat Management – Defending the Edge
Endpoint Security focuses on protecting end-user devices, including desktops, laptops, and mobile devices, from malware, ransomware, and zero-day exploits. Cyber Threat Management covers the lifecycle of threat intelligence, from identification to remediation, including risk assessment frameworks and incident response planning. Together, these courses provide a comprehensive view of the modern threat landscape and the tools used to combat it.
Step-by-Step Guide: Endpoint Hardening on Windows and Linux
Windows (Command Prompt / PowerShell as Administrator):
Enable Windows Defender Real-time Protection Set-MpPreference -DisableRealtimeMonitoring $false Configure Firewall Rules New-1etFirewallRule -DisplayName "Block Port 445" -Direction Inbound -LocalPort 445 -Protocol TCP -Action Block Disable Unnecessary Services Stop-Service -1ame "PrintSpooler" -Force Set-Service -1ame "PrintSpooler" -StartupType Disabled
Linux (Ubuntu/Debian):
Enable and Configure UFW Firewall sudo ufw enable sudo ufw default deny incoming sudo ufw default allow outgoing sudo ufw allow 22/tcp SSH sudo ufw allow 80/tcp HTTP sudo ufw allow 443/tcp HTTPS sudo ufw status verbose Install and Run ClamAV (Antivirus) sudo apt update && sudo apt install clamav clamav-daemon -y sudo freshclam Update virus definitions sudo clamscan -r /home --remove Scan home directory Harden SSH Configuration sudo nano /etc/ssh/sshd_config Set: PermitRootLogin no Set: PasswordAuthentication no Set: Port 2222 (change from default) sudo systemctl restart sshd
These hardening measures significantly reduce the attack surface of endpoints, a critical component of any defense-in-depth strategy.
6. Network Defense – Building the Security Perimeter
The Network Defense course introduces foundational concepts in network security defense, including system and network hardening, access control, firewall technologies, cloud security, cryptography, and security alert evaluation. It prepares learners for entry-level roles including Junior Cybersecurity Analyst and Network Security Specialist.
Step-by-Step Guide: Configuring a Basic Firewall with iptables (Linux)
Step 1: View Existing Rules
sudo iptables -L -v -1
Step 2: Set Default Policies (Drop All Incoming, Allow All Outgoing)
sudo iptables -P INPUT DROP sudo iptables -P FORWARD DROP sudo iptables -P OUTPUT ACCEPT
Step 3: Allow Established Connections
sudo iptables -A INPUT -m state --state ESTABLISHED,RELATED -j ACCEPT
Step 4: Allow Specific Incoming Ports
sudo iptables -A INPUT -p tcp --dport 22 -j ACCEPT SSH sudo iptables -A INPUT -p tcp --dport 80 -j ACCEPT HTTP sudo iptables -A INPUT -p tcp --dport 443 -j ACCEPT HTTPS
Step 5: Save and Persist Rules
Debian/Ubuntu sudo apt install iptables-persistent -y sudo netfilter-persistent save RHEL/CentOS sudo service iptables save
Step 6: Test the Firewall
From another machine ping <server_ip> Should timeout ssh user@<server_ip> Should connect (if allowed)
This foundational firewall configuration is a core skill taught in the Network Defense course, providing hands-on experience with access control lists and stateful inspection.
What Undercode Say:
- Key Takeaway 1: Cisco Networking Academy’s 2026 free course offerings represent a complete, structured pathway from networking fundamentals to advanced security operations, eliminating financial barriers to entry-level and mid-career cybersecurity roles. The inclusion of industry-recognized digital badges on Credly provides immediate LinkedIn credibility.
-
Key Takeaway 2: The integration of NDG virtual labs within the CyberOps Associate and CCNA courses delivers practical, hands-on experience that is often missing from theoretical certifications. This practical exposure to real-world tools like Wireshark, Python, and network simulators bridges the gap between knowledge acquisition and job-ready skills.
Analysis: The strategic value of these courses extends beyond individual skill development. For organizations, they represent a pipeline of trained talent with standardized Cisco knowledge. For professionals, the courses offer a low-risk way to pivot into high-demand specializations like network automation (DevNet) and security operations (CyberOps). The courses are self-paced and accessible from any device, making them ideal for working professionals and students alike. However, learners must be disciplined—the courses require significant time investment (70+ hours for CCNA alone) and self-motivation to complete. The certification exams are not included for free, but the foundational knowledge gained makes exam preparation substantially more efficient. Critically, the curriculum’s emphasis on APIs, Python, and automation aligns with the industry’s shift toward infrastructure as code, ensuring that graduates are prepared for the future of networking, not just its present.
Prediction:
- +1: The accessibility of these free Cisco courses will democratize cybersecurity education, leading to a more diverse and skilled workforce entering the field over the next 2-3 years, potentially alleviating the global cybersecurity talent shortage.
- +1: As more professionals complete the DevNet Associate track, we will see a surge in network automation adoption across enterprises, reducing human error and improving operational efficiency.
- -1: The proliferation of certified professionals without commensurate hands-on experience may lead to a temporary devaluation of entry-level certifications, requiring employers to place greater emphasis on practical lab work and portfolio projects during hiring.
- +1: The CyberOps Associate and Network Defense courses will directly contribute to improved organizational security postures as more trained analysts enter SOCs and incident response teams, enhancing threat detection and response capabilities globally.
▶️ Related Video (78% Match):
🎯Let’s Practice For Free:
🎓 Live Courses & Certifications:
Join Undercode Academy for Verified Certifications
🚀 Request a Custom Project:
Secure, high-velocity infrastructure and disruptive technological engineering. Contact our engineering team for high-tier development and proprietary systems:
[email protected]
💎 Smart Architecture | 🛡️ Secure by Design | ⭐ Trusted by Thousands
IT/Security Reporter URL:
Reported By: Gmfaruk Infosec – Hackers Feeds
Extra Hub: Undercode MoN
Basic Verification: Pass ✅
