What is a Firewall?

This is an animated video explaining what a network firewall is. A firewall is a system that is designed to prevent unauthorized
access from entering a private network by filtering the
information that comes in from the internet. A firewall blocks
unwanted traffic and permits wanted traffic.

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[sylvestermnyeti]

U guys are better than my best Lecturers, u explain concepts in such a way my grandma can easily catch it up.

U made me fall in love with Networking again.
I really appreciate.

[zZTubeDogZz]

The ending is just perfect. A burning router that is literally on fire. Well played.

[philiphy]

This is the best explainer channel by far. Unfortunately most smart tech people are pretty bad at explaining to others, which makes it super frustrating and at the worse of times makes me feel stupid. However, when I see these videos explained so clearly, it changes my whole look outlook on my abilities and the IT field. I can't emphasize how much these videos mean to me. Thank you!

[klwtherd]

I love when the hackers says, "increase attack!" And the skull & crossbones gets through the network firewall but not the host based. The animation us awesome!

[roperabay]

This channel is one of the best YouTube channels in terms of content. Every single video provides substantial and complete information about the topics under investigation. The animation simplifies the topic farther making it highly comprehensive. Hats-off to the author.

[TheJCEguy]

I passed my 902 part of the A+ Cert CE and am now A+ Certified. Thanks a lot for your animated videos!!!:D

[vimalalwaysrocks]

its surprising how many people in IT like me have got around so long without learning these basic concepts until today.. thank you very much!

[stonebravefoot]

Hey, I just want to say how amazing your videos are in comparison to the networking courses on Coursera. Your use of animation and analogy have made these hard topics so much easier to understand. Keep up the good work!

[RahulYadav-dxiw]

I started searching youtube videos when I enrolled in a networking course and I found your videos. Your videos are truly amazing. These videos simplified complicated concepts by obvious explanation and colorful animation with pictures. I have to mention that the videos are better than my lecturers. I intially struggled with networking course, but watching your videos helped me simply comprehend the concepts and pass my exams. Thanks for the videos. Carry on posting more videos.

[cyaaa]

Love your animated teaching videos ... clear, concise ... easy to comprehend. New subscriber ... Keep up the good work.

[rabiej]

Best IT channel ever! i love the visualization of concepts and how well you present and explain them. thank you! SUBSCRIBED

[pomylye]

You are incredible. These videos are so useful. Thank you for taking the time to make and upload these.

[ciapekrolek]

There's hundreds of comments under this material, but I also need appreciate your involvment to create such good guide. If there were more materials like this, people can learn smart things to do their jobs in 6 month in comparison to study 3 or 5 years where teachers teach so boring that nobody listen. Very good !! :) Internet needs such people like you.

[guruji]

My understanding after watching this video is very vivid. The simple way I understood and will teach others in the future is that our network is like our house. Network based firewall is the main gate and host-based firewall is the door of room. Former protects the whole house and later protects the specific room. Both are needed to be safe from intruders.

[Rano-]

The most concise explanation i've ever came across on the internet. 100x better than at school

[supreetbatra]

The videos are so well defined and explained in detail that even a fresher can understand all the concepts.

[pandeyRaman]

Best IT channel on youtube, explanation is in very simple and effective way, love this channel😊

[juan-carlosfrancois]

Number 1 IT Channel!!! The visuals that you provide are super duper helpful

[johna]

Hello MR, I just wanted to tell you that you are an excellent teacher and also very clear in every single video. Thank you.