fwknop-gui from openSUSE:Leap:15.2 project

Sty agraw n unessmres nnek/m

For standard run the following as root:
zypper addrepo https://download.opensuse.org/repositories/openSUSE:Leap:15.2/standard/openSUSE:Leap:15.2.repo
zypper refresh
zypper install fwknop-gui