Network Security Basics: Firewall, AD & DMZ
The Network Security Essentials course by Open Source equips IT support staff, help desk technicians, and aspiring security analysts with foundational skills to defend against common threats like malware, phishing, and network intrusions. It addresses the critical industry gap in entry-level cybersecurity readiness—LPI reports over 350,000 certified professionals globally demand proven baseline knowledge. Learners gain practical abilities in securing networks, applying encryption, managing access controls, and using firewalls and IDS/IPS to ensure data confidentiality, integrity, and availability.
This course prepares candidates for the LPI Security Essentials (020-100) certification, featuring 40 questions in a 60-minute exam with a passing score of 500/800. Koenig Solutions provides 30-day lab access for hands-on practice with real-world tools, ensuring learners build confidence and proficiency. Graduates emerge ready to pursue roles in network defense and advance toward advanced security certifications.
Training Formats & Pricing
100% Happiness Guarantee · Free Rescheduling · Secure Payment
Course Overview
The Network Security Essentials course by Open Source provides a comprehensive foundation in network protection principles for individuals entering the cybersecurity field. Designed for roles such as Junior Network Security Analyst, IT Security Technician, and SOC Analyst, this program equips learners with essential skills in identifying threats like malware, phishing, and denial-of-service attacks while emphasizing the CIA triad—Confidentiality, Integrity, and Availability. With cybersecurity job postings growing steadily across sectors, particularly in government-linked industries and IT services firms, demand for foundational certifications has surged. This course aligns with real-world job functions sought by employers in the United States, Canada, India, and Saudi Arabia, where Vision 2030 infrastructure projects are driving consistent hiring needs.
Students engage with critical open-source tools and platforms including Nmap, Wireshark, Snort, Suricata, pfSense, and Metasploit within a hands-on lab environment powered by Mininet-Sec and Docker-based emulation. These labs allow learners to build secure network topologies, configure firewalls, deploy intrusion detection systems (IDS), and simulate attack scenarios such as ARP spoofing and SYN flood attacks. A key capstone project involves setting up a fully monitored enterprise-style network using pfSense as the firewall, integrating SIEM capabilities through log analysis with tools like Zeek and Suricata, and conducting vulnerability scans using Nmap and Nessus. The realistic lab environment mirrors actual security operations center (SOC) workflows, enabling students to gain practical experience in traffic analysis, incident response, and defensive configuration.
This training prepares candidates for the Vskills Certified Network Security Open Source Software Developer certification, a government-validated credential recognized by employers seeking skilled practitioners in network defense. Graduates report salary increases of $5,000 to $15,000 annually after certification, with entry-level roles starting between $55,000 and $75,000 in the U.S. Koenig Solutions enhances learning outcomes with Guaranteed-to-Run batches and access to official courseware, ensuring structured, instructor-led mastery of the material. By completing Network Security Essentials from Open Source, professionals lay the groundwork for advancement into mid-level positions such as Network Security Engineer or Security Analyst within two to four years, positioning themselves for long-term success in high-growth cybersecurity careers.
What You'll Learn
Prerequisites
- CompTIA Network+ level knowledge or equivalent experience is required for the Network Security Essentials course by Open Source.
- Proficiency in networking fundamentals, including IPv4/IPv6 addressing, subnetting, and the operation of routers and switches, is required for the Network Security Essentials course by Open Source.
- Practical experience with security analysis tools such as Wireshark or Nmap is required to analyze traffic and identify threats in the Network Security Essentials course by Open Source.
- Ability to navigate the Linux CLI and manage basic system configurations in Windows or Linux environments is required for the Network Security Essentials course by Open Source.
- Understanding of OSI model layers 1-4 and the CIA triad (Confidentiality, Integrity, and Availability) is required for the Network Security Essentials course by Open Source.
- Technical knowledge of core internet protocols, including TCP/IP, DNS, and HTTP/HTTPS, is required for the Network Security Essentials course by Open Source.
Certification Exam
Everything you need to know about the Network Security Basics: Firewall, AD & DMZ certification exam
What's Included in Your Training
Every enrollment comes packed with resources to maximise your learning and exam success
Exam Preparation Materials
Practice Test Questions (200+)
Certificate of Completion
Post-Training Support (30 days)
Session Recording Access
Free Rescheduling (7+ days notice)
Career Outcomes
of Network Security Basics: Firewall, AD & DMZ certified professionals report career advancement within 6 months
Salary Impact
Average salary increase reported after obtaining the Network Security Basics: Firewall, AD & DMZ certification
*Source: Glassdoor / LinkedIn 2025
Job Roles
- Network Security Analyst
- SOC Analyst
- IT Security Technician
- Junior Network Security Engineer
- Security Operations Specialist
- Cybersecurity Associate
Companies Hiring
and 5,000+ organizations worldwide seeking Network Security Basics: Firewall, AD & DMZ certified professionals
Course Student Reviews
Real results from IT professionals who trained with Koenig — rated 4.9/5 from 18,400+ verified reviews.
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★★★★★
“Passed AZ-104 on first attempt. The MCT knew the exact exam patterns and the labs were exactly what Microsoft tests. Worth every penny.”
AZ-104 Certified ✓ Verified -
★★★★★
“I trained 15 of my team members for SC-200. Koenig's on-site delivery was seamless and all 15 passed within 3 months.”
Enterprise Client ✓ Verified -
★★★★★
“The 1-on-1 format was a game changer. My trainer adjusted the pace to my schedule and I cleared PL-300 while working full-time.”
PL-300 Certified ✓ Verified -
★★★★★
“From AZ-900 to AZ-305 in 6 months. Koenig's structured roadmap and MCT mentoring made the expert level achievable.”
AZ-305 Expert ✓ Verified -
★★★★★
“As an L&D head I've used 5 training vendors. Koenig's MCT quality, MOC materials, and ESI compliance is in a different league.”
100+ Learners Trained ✓ Verified -
★★★★★
“SC-900 and SC-300 back to back — both cleared first try. The security curriculum at Koenig is incredibly thorough and up to date.”
SC-300 Certified ✓ Verified -
★★★★★
“AI-102 was daunting but the trainer broke it down perfectly. Real Azure OpenAI labs made the difference. Highly recommend.”
AI-102 Certified ✓ Verified -
★★★★★
“DP-600 Fabric certification done in 3 weeks of part-time study. The customised schedule around my timezone was a lifesaver.”
DP-600 Certified ✓ Verified -
★★★★★
“Our whole DevOps team got AZ-400 certified through Koenig's corporate training. Smooth logistics and top-tier MCTs throughout.”
AZ-400 Team Training ✓ Verified -
★★★★★
“Passed AZ-104 on first attempt. The MCT knew the exact exam patterns and the labs were exactly what Microsoft tests. Worth every penny.”
AZ-104 Certified ✓ Verified -
★★★★★
“I trained 15 of my team members for SC-200. Koenig's on-site delivery was seamless and all 15 passed within 3 months.”
Enterprise Client ✓ Verified -
★★★★★
“The 1-on-1 format was a game changer. My trainer adjusted the pace to my schedule and I cleared PL-300 while working full-time.”
PL-300 Certified ✓ Verified -
★★★★★
“From AZ-900 to AZ-305 in 6 months. Koenig's structured roadmap and MCT mentoring made the expert level achievable.”
AZ-305 Expert ✓ Verified -
★★★★★
“As an L&D head I've used 5 training vendors. Koenig's MCT quality, MOC materials, and ESI compliance is in a different league.”
100+ Learners Trained ✓ Verified -
★★★★★
“SC-900 and SC-300 back to back — both cleared first try. The security curriculum at Koenig is incredibly thorough and up to date.”
SC-300 Certified ✓ Verified -
★★★★★
“AI-102 was daunting but the trainer broke it down perfectly. Real Azure OpenAI labs made the difference. Highly recommend.”
AI-102 Certified ✓ Verified -
★★★★★
“DP-600 Fabric certification done in 3 weeks of part-time study. The customised schedule around my timezone was a lifesaver.”
DP-600 Certified ✓ Verified -
★★★★★
“Our whole DevOps team got AZ-400 certified through Koenig's corporate training. Smooth logistics and top-tier MCTs throughout.”
AZ-400 Team Training ✓ Verified
-
★★★★★
“Passed AZ-104 on first attempt. The MCT knew the exact exam patterns and the labs were exactly what Microsoft tests. Worth every penny.”
AZ-104 Certified ✓ Verified -
★★★★★
“I trained 15 of my team members for SC-200. Koenig's on-site delivery was seamless and all 15 passed within 3 months.”
Enterprise Client ✓ Verified -
★★★★★
“The 1-on-1 format was a game changer. My trainer adjusted the pace to my schedule and I cleared PL-300 while working full-time.”
PL-300 Certified ✓ Verified -
★★★★★
“Passed AZ-104 on first attempt. The MCT knew the exact exam patterns and the labs were exactly what Microsoft tests. Worth every penny.”
AZ-104 Certified ✓ Verified -
★★★★★
“I trained 15 of my team members for SC-200. Koenig's on-site delivery was seamless and all 15 passed within 3 months.”
Enterprise Client ✓ Verified -
★★★★★
“The 1-on-1 format was a game changer. My trainer adjusted the pace to my schedule and I cleared PL-300 while working full-time.”
PL-300 Certified ✓ Verified
-
★★★★★
“From AZ-900 to AZ-305 in 6 months. Koenig's structured roadmap and MCT mentoring made the expert level achievable.”
AZ-305 Expert ✓ Verified -
★★★★★
“As an L&D head I've used 5 training vendors. Koenig's MCT quality, MOC materials, and ESI compliance is in a different league.”
100+ Learners Trained ✓ Verified -
★★★★★
“SC-900 and SC-300 back to back — both cleared first try. The security curriculum at Koenig is incredibly thorough and up to date.”
SC-300 Certified ✓ Verified -
★★★★★
“From AZ-900 to AZ-305 in 6 months. Koenig's structured roadmap and MCT mentoring made the expert level achievable.”
AZ-305 Expert ✓ Verified -
★★★★★
“As an L&D head I've used 5 training vendors. Koenig's MCT quality, MOC materials, and ESI compliance is in a different league.”
100+ Learners Trained ✓ Verified -
★★★★★
“SC-900 and SC-300 back to back — both cleared first try. The security curriculum at Koenig is incredibly thorough and up to date.”
SC-300 Certified ✓ Verified
-
★★★★★
“AI-102 was daunting but the trainer broke it down perfectly. Real Azure OpenAI labs made the difference. Highly recommend.”
AI-102 Certified ✓ Verified -
★★★★★
“DP-600 Fabric certification done in 3 weeks of part-time study. The customised schedule around my timezone was a lifesaver.”
DP-600 Certified ✓ Verified -
★★★★★
“Our whole DevOps team got AZ-400 certified through Koenig's corporate training. Smooth logistics and top-tier MCTs throughout.”
AZ-400 Team Training ✓ Verified -
★★★★★
“AI-102 was daunting but the trainer broke it down perfectly. Real Azure OpenAI labs made the difference. Highly recommend.”
AI-102 Certified ✓ Verified -
★★★★★
“DP-600 Fabric certification done in 3 weeks of part-time study. The customised schedule around my timezone was a lifesaver.”
DP-600 Certified ✓ Verified -
★★★★★
“Our whole DevOps team got AZ-400 certified through Koenig's corporate training. Smooth logistics and top-tier MCTs throughout.”
AZ-400 Team Training ✓ Verified
Frequently Asked Questions
Everything you need to know about the Network Security Basics: Firewall, AD & DMZ training course
Is the Network Security Essentials certification exam fee included in the course price, and what is the cost if separate?
What training formats does Koenig offer for Network Security Essentials, and is Guaranteed-to-Run scheduling available?
How long is lab access provided for Network Security Essentials, and what environment is used?
What is Koenig's rescheduling and cancellation policy for the Network Security Essentials course?
What is the format, duration, number of questions, and passing score of the Network Security Essentials exam?
How long is the Network Security Essentials certification valid, and what is the renewal process and cost?
What post-training support does Koenig provide after completing the Network Security Essentials course?
Are there any prerequisites or prior experience required for the Network Security Essentials course?
What salary increase or career impact can I expect after earning the Network Security Essentials certification?
How does formal training compare to self-study for the Network Security Essentials certification?
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