W2_L4: Networking commands & SSH

[Music]

welcome to this session on network and ssh in this session we will look at how to access remote machines using a command line utility so here is how most of our daily life would be that is we are at home in a private network our computer is connected to the telephone as a hotspot and then the telephone is

then connected to the internet service provider let us say geo or air or whatever and then it is able to access the internet so public network is basically the internet and a lot of routing of packets happen within the internet and from our home we would like to access let us say a particular website

so that website may be sitting in another network of a different campus or organization so for example sitting at home in your hometown you want to access the website of iit address so the iit madras is this blue private network let us say and one of those computers running the web server of iit madras would then be making its

content available through the campus lan followed by a network switch which then passes on the content onto the public network which will come through all this connections to the internet service provider for your home telephonic network and then on to your computer device so that you can look at the home page and

all of this happens within a fraction of a millisecond so that you are having a very live experience of browsing now what it is also important for us to realize is that we don't have a direct access to the private networks in respect to organizations so we need to understand how is that made