NCTUns 4.0 Network Simulator and Emulator Download
The latest NCTUns 4.0 currently runs ONLY on the Red-Hat Fedora 8 Linux operating system!
The Linux distribution that works with the latest NCTUns 4.0 and has been fully tested is Red Hat's Fedora 8. Other Linux distributions such as Debian may work with NCTUns because they use the same Linux kernel as Fedora. However, configurations and settings on these distributions may be different from those on Fedora. It is the user's responsibility to adjust configurations and settings if he (she) would like to install the latest NCTUns 4.0 on a different Linux distribution than Fedora 8. Because NSL has not tested the latest NCTUns 4.0 on other Linux distributions, it is not guaranteed that the latest NCTUns 4.0 can work correctly on Linux distributions other than Fedora 8.
Starting from NCTUns 2.0, the FreeBSD operating system is no longer supported.
As said above : "Other Linux distributions such as Debian may work with NCTUns because they use the same Linux kernel as Fedora"
So how do i install this ... i tried once and failed to do so ...i think a packing is required for this
Link to download the source : http://nsl10.csie.nctu.edu.tw/products/nctuns/download/download.php
I tired other alternatives did not help ...almost close one was GNS3