Latest News


NeSSi2 2.1.2 has been released

Available for download now!


NeSSi2 2.1.1 has been released

Available for download now!


Error with Win32 UI zip file

The zip-file for the Win32 version was damaged, after decompressing it showed duplicate files. We...


See NeSSi2 in action: Lange Nachte der Wissenschaften 2012 (Science Night 2012)

June 2, from 17-01


Network Security Simulator


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Logo Telekom Laboratories

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License Information

NeSSi² is published under the Apache 2.0 license. Furthermore, NeSSi² must not be used for preparing attacks on hosts or network infrastructures or to test for security vulnerabilities of host or network infrastructures without consent of the owner of targeted host or network infrastructures.