is it possible to ping flood (or DoS) a single computer as opposed to an entire service? lets say i'm connected to a network and i want to ping so many that it cannot receive information from a legitimate source (therefore making impossible for this machine to access the internet), is this practical? what tools should i use? (i know of a program called LOIC but i'm wary about downloading it because i'm unsure of its origins (and its a .exe)

my end goal is to disrupt internet connection to the local ip address, am i looking in the right direction?