This is the another issue provided by iBatangas to all of our readers who is thinking of trying out a Linux Distributions.

Ubuntu

The default firewall used by Ubuntu is called UFW which stands for Uncomplicated Firewall. To activate, issue the following command in the Terminal by clicking Applications > Accessories > Terminal

Issue the command: sudo ufw enable

You will get a response of: Firewall is active and enabled on system startup.

For the GUI users not familiar with the command line interface, may have difficulty managing the firewall. Don’t worry, you have the option to use GUFW (the graphical user interface for UFW).
GUFW is an easy way to manage the Ubuntu firewall. You can do common tasks such as allowing or blocking pre-configured, individual port(s), common p2p, just to name a few.

To install, issue the following command in the Terminal: sudo apt-get install gufw

You will get a response of:
Reading package lists… Done
Building dependency tree
Reading state information… Done
The following extra packages will be installed:
menu
Suggested packages:
menu-l10n
The following NEW packages will be installed:
gufw menu
0 upgraded, 2 newly installed, 0 to remove and 0 not upgraded.
Need to get 683kB of archives.
After this operation, 3,420kB of additional disk space will be used.
Do you want to continue [Y/n]? y

Hit enter key, you’re done.

Another option to install GUFW if you don’t like typing in your keyboard or work with your terminal is to click Application > Ubuntu software Center, type gufw in the search box then highlight “Firewall Configuration”, then click the Install button.

Note: Canonical do not provide updates for the Ubuntu firewall configuration.

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