$ sudo apt-get update
$ sudo apt-get install fwknop-apparmor-profile 

fwknop-apparmor-profile is installed in your system.

Make ensure the fwknop-apparmor-profile package were installed using the commands given below,

$ sudo dpkg-query -l | grep fwknop-apparmor-profile *

You will get with fwknop-apparmor-profile package name, version, architecture and description in a table

fwknop-apparmor-profile package basic information: