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Free CompTIA Network+ Training: Firewall and Proxy Server

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In this CompTIA Network+ Training video, I’ll explain what firewalls and proxy servers are and how they work. You’ll learn about their core functions and how they are different from one another.

I’ll show you how firewalls control what data is allowed in or out of a network to protect private networks from external intrusion. You’ll also learn about the three main purposes of using a proxy server; disguising an end user’s actual identity using NAT (Network Address Translation), caching requests to save bandwidth, and controlling content permitted to be requested from the Internet.

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About the Author

(MCP, MCSA, MCSE, MCDST, MCT, MCTS, MCITP, A+, Network+, Server+, CWTS, CWNA, CWNT) has worked in technology for 20 years. He has been certified and instructing IT since 1998. He has helped thousands of people to get started or advance their careers in the IT industry. When he is not in the classroom, he is out helping corporations with their network infrastructure as an independent consultant. Ed will get you ready to pass your exams while you develop the skills needed to succeed in the "real world". His teaching style encourages you to have fun while you learn. Ed also volunteers his time in his local community as a math tutor for struggling grade school children.

Discussion

2 comments and trackbacks for “Free CompTIA Network+ Training: Firewall and Proxy Server”

Comments

  1. Posted by Theresia Coradi on February 7, 2011, 3:09 am

    hi i have a problem that This website doesnt load When using internet explorer 9 .kindly you will clear the problem ,by the way is that i trully praise ur Website

  2. Train Signal Team Member
    Posted by Kasia Lorenc on February 7, 2011, 3:29 pm

    Hi Theresia,

    What part of the website doesn’t load for you in IE9? Are you talking about the video?

    If it is the video, then I would suggest that you first make sure that you have Adobe Flash Player installed on your PC http://www.adobe.com/software/flash/about/

    If you continue to have problems, let me know and we’ll try to work it out, ok?

    Kasia

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