All of the site categories sorted in descending order depending upon when the last post in the category was published.
Network management is the art and science of managing an enterprise network.
Things doesn’t get much more specialised than protocol analysis. Protocol analysis involves the study of the packets flowing through a computer network.
There are many tools that can be used to analyse packets on a network. From very expensive dedicated hardware to commercial software and open source solutions.
Open source is a term that was coined in the late 1990s to encompass a series of free software licences that give various levels of freedom to the users of software. On the one hand you have so called copyleft licences like the General Public License or GPL that place some restrictions on the user to other much more liberal licences like the BSD license that place very few restrictions on the user.