Download the net-glimpse-x.x.zip Unzip and change into the unzipped folder On Linux or Unix to access network interfaces you have to start the net-glimpse either as root or give Java special capabilities, e.g. with sudo setcap cap_net_raw,cap_net_admin=eip /usr/lib/jvm/java-8-openjdk-amd64/jre/bin/java (but exchange the path to your Java installation). On Windows you will be ask after starting net

