ICS-NetSim is a simple network simulator inspired by Packet Tracer. It was originally developed by Michael Detras and Vincent Lee for their capstone project in 2006 (see AUTHORS). It is currently used to teach the IP Routing lab in CMSC 137 Data Communications and Networking.
Download the latest jar file from the Releases section. Make sure that you have the installed the correct JDK version.
java -jar <jarfile>
Install Apache Ant
ant jar
The runnable jar file is in dist/