Common Open Research Emulator

An unofficial .deb (amd64 and armhf) repository for CORE


CORE: Common Open Research Emulator

The Common Open Research Emulator (CORE) is a tool for emulating  networks in one or more machines. You can connect these emulated networks to live networks.
CORE consists of a GUI for drawing topologies of lightweight virtual  machines, and Python modules for scripting network emulation.

The official CORE homepage is
Key features:

CORE and Debian

I am Eriberto and I was the CORE maintainer in Debian for some years. However, CORE has a security hole not solved that allow users to access the root account from the real machine easily. So, CORE was removed from Debian. You can see some references about it in following links:

.deb files for CORE

CORE is an excellent tool to learn about networks (even considering a security hole). Well, I will try keep providing .deb files for CORE outside of Debian.

NOTE: the packages made for Wheezy and Jessie are for amd64 architecture only. There are packages amd64 and armhf for Stretch.

1. You need add two lines to end of the /etc/apt/sources.list file.

If you use Debian 9 (Stretch), use the following lines:

deb stretch main
deb-src stretch main

If you use Debian 8 (Jessie):

deb jessie main
deb-src jessie main

If you use Debian 7 (Wheezy):

deb wheezy main
deb-src wheezy main

2. Add my public key to your Debian keyring:

# apt-key adv --recv-keys 04ebe9ef


# apt-key adv --keyserver --recv-keys 04ebe9ef

3. Run:

# apt-get update
# apt-get install core-network

4. Be happy!

5. If you want to get the packages directly, go to here.

Packages status

Compatibility list for Ubuntu users


If you need talk with me, please, write to eriberto<a> Please, don't send irrelevant messages and be patient because I can take longer to reply. Thanks!


url and counting visits