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...You can create an unlimited number of virtual COM port pairs and use any pair to connect one COM port based application to another. The HUB for communications (hub4com) allows to receive data and signals from one COM or TCP port, modify and send it to a number of other COM or TCP ports and vice versa.
NOTE: This is the old Swing version. The current version of Jace can be found here: https://github.com/badvision/jace
Because of malware injections in other Sourceforge projects, the author has removed all binaries from Sourceforge. You may look at the legacy source still hosted here but are highly encouraged to check out the new version hosted in Github for recent updates on this project.
Thank you for your interest in this project!
][ Infinitum!
For new versions, check https://github.com/Darkkey/javaNetSim
javaNetSim (Java Network Simulator) - it's a fork of a project jFirewallSim. The main goal of javaNetSim is creating a software to simulate various TCP/IP networks based on Ethernet, WiFi, PPP, etc...