Hello, I'm from Borneo and I would like to learn and understand more about blackhat especially in a network environment. I work as network technician but still having a problem on configuration on the high-end equipment especially cisco router and another router. I had download kali Linux into my laptop, haha I really I'm weak on Linux command line but I willing to learn how to use it. I hope you guys could giving some guideline and it would be grateful. Thanks.