Thank you for the Link to OpenRepos. But the .deb file (not exactly the same but a very very similar one) I've already downloaded from here like described in post #1 step 3.

I thought with "apt-get install openvpn" (post #1 step 2) you install other stuff that is necessary for the .deb file to work.

I like to try only the .deb file without the apt-get command before. Maybe you are right and the apt-get command is not necessary. But I guess I need opensh for a successful installation of the .deb file and I can not find it. I've found in an article that I also need inception? All links to these tools do not work anymore...only dead-ends everywhere I look.

Maybe someone has another hint for me where I can get opensh?