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Complex networking topics explained in the simplest way possible…
Including Cisco CCNA, CCNP and CCIE Enterprise Infrastructure.

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872 lessons and I am constantly adding new lessons, videos and reference material. Everything is explained in the simplest way possible.

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Create your free account and start learning right away. Explore 447 free lessons, experience our teaching style, and learn at your own pace.

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Do you still have questions after viewing some of the lessons? We have a community forum where we help out members with answers.

Pick your Hands-On Training Category

Beginner in networking or professional? We offer Cisco lessons for all levels. If you have never worked in IT before then you will enjoy the CCNA lessons while experts will love the CCIE lessons. My lessons will help you to prepare for popular certifications like:

Cisco CCNA Routing & Switching
Cisco CCNP Logo
Cisco Ccie Logo

Or any of our other topics

What our Members are Saying

  • December 21, 2023
    Yavor Hadzhiev
    Yavor Hadzhiev
    IT Support Engineer
    Very Well Organized
    What I like most about NetworkLessons.com is how well the information is organized into each protocol and further sub-divided into sub-topics. The attention to detail is impressive. The videos with the topologies on the whiteboard are very helpful. I have been familiar with NetworkLessons.com for at least 6-7 years, since the GNS3 Vault website. Thank you for the good work, keep it up.
  • March 23, 2025
    Henri Stema
    Henri Stema
    IT Consultant
    Well-Organized Learning
    NetworkLessons.com is a fantastic resource for anyone looking to deepen their networking knowledge. The lessons are well-structured, easy to follow, and packed with real-world examples that make complex topics easier to understand. If you’re serious about mastering networking, I’d definitely recommend NetworkLessons.com as a reliable and well-organized learning environment.
  • November 13, 2023
    Maciej Stanecki
    Maciej Stanecki
    Network & Cloud Engineer
    Optimal Learning Balance
    NetworkLessons.com has the best ratio between explaining the theory and practicing it. The explanations are very comprehensive. The visuals like topology screen shots and CLI outputs are top-notch as well.

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Stop Struggling & Start Learning

“My name is Rene Molenaar, and I am here to help you to achieve your goals. Do you want to upgrade your skills? Want to start a career in networking? Become a CCIE in Enterprise Infrastructure? Let me help you! After teaching Cisco classroom courses for several years I decided to share my knowledge online on NetworkLessons.com.”

Rene Molenaar CCIE #41726, founder of NetworkLessons.com (and primary course author)

Rene Molenaar Posing transparant