ferm software package provides maintain and setup complicated firewall rules, 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 ferm
ferm is installed in your system.
Make ensure the ferm package were installed using the commands given below,
$ sudo dpkg-query -l | grep ferm *
You will get with ferm package name, version, architecture and description in a table
| Distro | Ubuntu 14 04 lts trusty tahr |
| Section | Network |
| Package | ferm |
| Version | 2.2-1 |
| Description | maintain and setup complicated firewall rules |
| Sub Section | Net |