NetworkChuck (Chuck Keith)

I am a Cisco Certified Network and Voice Engineer with a passion for all things technology. I have spent most of my time mastering the world of networking and collaboration but still find myself dabbling in systems and programming. As much as I consider myself an engineer/admin, I mostly assume the role of student in my daily routine, constantly learning a new technology and looking for ways to apply it to my job.

Providing solutions for customers is my favorite part of the job. I come from a sales and customer service background and I think this has been instrumental to my success. Knowing the technology is key but knowing the customer is what sets you apart.

Current Certifications:

-CCNA Routing and Switching

-CCNA Voice

-CompTIA Security +




David Bombal

David Bombal (CCIE #11023 Emeritus) passed his Cisco Certified Internetwork Expert Routing and Switching exam in January 2003. David has the highest rated and most popular course in the GNS3 Academy: SDN and OpenFlow Introduction.

David's software tools and training have been downloaded +100,000 times. Many thousands of engineers like you use his tools and training on a regular basis.

David has developed over 20 courses for HP which are used worldwide. These include multiple SDN courses and HP ASE certification courses (4 day Instructor led training).

David's YouTube videos have been viewed +2 million times.

David has been training Cisco and networking courses for 15+ years and has delivered instructor led courses in various countries around the world covering a wide range of Cisco topics from CCNA to CCIE.

He has also personally developed Cisco engineer utilities such as the VPN Config Generator, software, training materials, EBooks, videos and other products which are used throughout the world.




Anthony Sequeira

Anthony Sequeira (CCIE No. 15626) began his IT career in 1994 with IBM in Tampa, Florida.

He quickly formed his own computer consultancy, Computer Solutions, and then discovered his true passion - teaching and writing about Microsoft and Cisco technologies.

Anthony has lectured to massive audiences around the world while working for Mastering Computers. Anthony has never been happier in his career than he is now as a freelance author and trainer and member of the thisisIT training team.

He is an avid tennis player, a private pilot, a guitar player, and enjoys many other hobbies.

Donald Robb

Donald Robb, also known as the-packet-thrower online, has been the industry for over 15 years doing everything from help desk to network architect. He has worked in most areas of IT to an expert level including networking, security, collaboration, data center, wireless, and service providers. Currently he is a Principal Consultant for a major Cisco Value Added Reseller (VAR) and focuses on complex projects that usually involve several different technologies. He also acts as the company’s Subject Matter Expert (SME) for Automation/DevOps, SDN, and Security topics.

During his time, he has worked with most of the big vendors and some of the smaller ones too and have earned many advanced certifications and specializations. These include most of the cloud certifications such as the Azure Solutions Architect Expert, most of the Cisco certifications, and some random ones across vendors like Fortinet, Palo Alto, and HPE. He is also recognized as a Cisco FireJumper proving his proficiency with Cisco’s security solutions, and worked with Todd Lammle on several books and courses.

You can reach Donald through or check out his YouTube channel at:

Michael Hilton

Hello everyone! I have been tinkering with technology since I was 5, when I was given a Dell OptiPlex computer. Ever since then, I have been working with various technologies including Networking, Linux, Cloud, Programming, and Software Defined Networking.

I got my CCNA when I was 14, CCNP when I was 15, and am currently working on attaining the CCIE in Enterprise Infrastructure. I am currently working on creating content for thisisIT. When I am not in front of a computer, I am usually spending time outside with friends or playing guitar.

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