[RELEASE] Hak5 Cloud C2 3.0.x in Hak5 Cloud C² Posted November 5, 2020 To my knowledge, port 22 has nothing to do with the functionality of Cloud C2, i.e. SSH is not a mandatory part to get it all up and running. For instance, I have no active internet facing port 22 on the VPS running my C2 instance and it works all fine for me. Why not just disabling/blocking port 22 and see how it works out for you. Not sure right now about the SSL port thing, have you tried the listenport parameter?