networking

For our final year research project in University we had to run CPU intensive simulations in High performance servers in the department. Some of the simulation scripts took around 1-2 days to converge into expected results. So, we wanted to let the scripts run in background even after the ssh session is terminated. After trying few things, it turned out that the ideal method is to use the “screen“ command. Luckily for us, the screen tool was already installed in …

It is really frustrating to type credentials when connecting to a particular host through multiple jump hosts. Is there a way to make things easier? Luckily YES! Follow these steps to make you life easier. For explanation purpose I will use the following example. Here, we are trying to SSH to Host-C via Host-A and Host-B. You can extend this method to any number of Hosts. [Your Computer]<—>[Host-A] <—> [Host-B] <—> [Host-C] [1] First of all, create this file if …

Maybe you are developing a web application and you want to expose your application running on your computer to the internet. Normally you will have to do a bunch of configurations to your webserver to let outside traffic even get in. Not only that, you might need to configure your firewalls, routers, etc as well. Today with this post I am going to show you a simple yet powerful tool I always use to access my locally hosted application through …

If you are using windows and Wireshark is not showing any network interfaces. Just, run Wireshark as an administrator.