This course is all about IOS security and all features that you can find to harden your router and switch and use your router as a firewall so that you don't have to invest your precious dollars on a firewall device!
I have explained all commands in detail so that you can easily get a grab on that feaure. If you cannot find a feature, this means either it is obsolete and a better feature replaces that or I have forgotten to include it. In the latter case, I will be more than happy if you let me know what you want and I will add it to the curriculum.
I have used GNS3 for the simulation. However, you can execute all commands on a real gear without any change.
I have trained more than 1200 direct and 28000 online students for CCNA, CCNP and CCIE Routing and Switching courses.
I started as a Microsoft guy (like most of network experts!) and then ended up to become a network expert, first as a trainer and video tutorial presenter and then as a consultant for many small to medium to large enterprises. This consultant role gave me some huge and precious experience that I could add to my courses and make them richer than before.
I hope my courses on Udemy can help you to achieve your goals and become the one you wish to become.
Good luck with your studies!