Para openSUSE Tumbleweed execute o seguinte como root:
zypper addrepo https://download.opensuse.org/repositories/home:munix9/openSUSE_Tumbleweed/home:munix9.repo
zypper refresh
zypper install opensnitch
Para 15.6 execute o seguinte como root:
zypper addrepo https://download.opensuse.org/repositories/home:munix9/15.6/home:munix9.repo
zypper refresh
zypper install opensnitch
Para 15.5 execute o seguinte como root:
zypper addrepo https://download.opensuse.org/repositories/home:munix9/15.5/home:munix9.repo
zypper refresh
zypper install opensnitch