How to install Firewall on Ubuntu Linux | Guarddog installation steps

Steps to install Guarddog Firewall on your computer
1. Click on Applications
2. Click on Accessories and Open Terminal
On Terminal type the following command:
sudo apt-get install guarddog
After typing the command press enter. Now the Guarddog will be downloaded.
3. Installing Firewall
After downloading Guarddog you will get a message like:
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After this operation, 67.1MB of additional disk space will be used.
Do you want to continue [Y/n]?
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You need to type Y and press enter to install the Firewall.
PS: If it is the firat time installation of guarddog on your computer , you may get an error message like below.
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Setting up guarddog (2.6.0-2.1ubuntu3) …
Unable to start guarddog firewall – /etc/rc.firewall does not exist
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You don’t need to worry about the alert and you can directly open Guarddog by following steps.
1. Click on Applications
2. Click on Internet and click on Guarddog