OK, I stopped all dockers, disabled port forwarding, removed Win10 VM and changed IP address. SSH attempts seem to have stopped. However, I would like to eventually be able to access at least some dockers via reverse proxy. My understanding is that, unless I forward SSH port or a docker contains malware, it should be relatively safe with letsecrypt/nginx, right? Now that Win10 VM is out of the picture, how do I proceed with figuring out which docker contains malware?