Hi I am Jeong Chul, who has been a professor in ITC and RUPP of Cambodia and has been teaching Network Security, Linux and Cisco Networking.At first time, this channel was designed to help students who have been studying my subjects at ITC and RUPP of Cambodia. However nowadays almost of users in the world are visiting this channel to get knowledge from this channel. I hope this channel would be useful and helpful to learn IT knowledge such as Linux, Network, Security and Database using various open source tools.I am sure your knowledge which you have obtained has been your power in your life. Please enjoy the knowledge as much as you can.God bless you.PS: All script files for videos on this channel have been uploading to knowledgepia.com.
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