How to Install GNS3 on Debian

By Tolga Bagci January 15, 2020 GNS3 0 Comments

With GNS3, you can make complex network designs and operate devices such as Cisco Switch, Cisco Switch, or ASA Firewall.

How to Setup GNS3 on Debian 10

GNS3 is a very advanced network simulator program, and one of the main reasons it widely uses is that it is a very flexible program. You can also download and install GNS3 for free.

GNS3 is compatible with most operating systems and works seamlessly. In our previous articles, we installed GNS3 on Windows 10 and Ubuntu;

In this article, we will install the latest version of the Cisco network simulator program on Debian, a Linux-based operating system, and finally, add a C7200 Cisco Router to test the program.

First, add the repository addresses below to the /etc/apt/sources.list file.

deb https://ppa.launchpad.net/gns3/ppa/ubuntu cosmic main
deb-src https://ppa.launchpad.net/gns3/ppa/ubuntu cosmic main
deb https://ftp.us.debian.org/debian jessie main
deb https://ftp.us.debian.org/debian stretch main
deb https://deb.debian.org/debian unstable main
deb https://deb.debian.org/debian stretch contrib deb https://deb.debian.org/debian stretch non-free

Sourcelist’i düzenledikten sonra GNS3 kurmak için sırasıyla alttaki komutları Terminal’de çalıştırınız.

1) sudo apt-get install dirmngr
2) sudo apt-key adv –keyserver keyserver.ubuntu.com –recv-keys F88F6D313016330404F710FC9A2FD067A2E3EF7B
3) sudo apt-get update
4) sudo apt-get install gns3-gui
5) sudo apt-get install libqt5webkit5

The above libqt5webkit5 command is a dependent package required to run versions 2.1 of GNS3 and must be installed!

NOTE: You can download the GNS3 2.1.21 version on your computer by following the steps in this article.

How to Configure and Run GNS3 2.1 in Debian

You can install GNS3 on your Linux system/computer and prepare more specifically for Cisco CCNA Routing or Switching exams.

Step 1

First, add the above addresses to the sources.list file. Make sure to open it as root. Otherwise, you will not be able to save changes to the file.

Step 2

Open the Terminal on the Debian desktop and use the su command to access Root.

Step 3

If you receive the No dirmngr error as shown in the image below after executing the command “sudo apt-key adv –keyserver keyserver.ubuntu.com –recv-keys F88F6D313016330404F710FC9A2FD067A2E3EF7B“, you must first install the dirmngr package.