firewall-applet software package provides panel applet providing status information of firewalld, you can install in your Ubuntu 14.04 LTS (Trusty Tahr) by running the commands given below on the terminal,
$ sudo apt-get update $ sudo apt-get install firewall-applet
firewall-applet is installed in your system.
Make ensure the firewall-applet package were installed using the commands given below,
$ sudo dpkg-query -l | grep firewall-applet *
You will get with firewall-applet package name, version, architecture and description in a table
| Distro | Ubuntu 14 04 lts trusty tahr |
| Section | Network |
| Package | firewall-applet |
| Version | 0.3.7-1 |
| Description | panel applet providing status information of firewalld |
| Sub Section | Net |