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I like data privacy, so I would like to set up a system that allows me to exchange data such as photos with family and friends. I have a raspberry pi (version 4 I think? the one that was new in the previous winter) running with OpenMediaVault5 to exchange documents within our home network. But now I would like a solution that also allows data sharing with people outside of our network.

I don't know so much about IT security, so please link me to the relevant concepts or briefly explain. I know that I have to

a) protect my data that I want to share online from being stolen/accessed by not authorised people

b) protect my home network behind my router from being attacked, because otherwise our computers can be attacked, too.

Hope that is correct so far.

I found this explanation about installing Nextcloud on top of OpenMediaVault. Unfortunately, they don't really explain, whether this is secure and why it is secure, if it is.

I figured out the following:

  • Using Docker is a good idea, because it makes setup easy and adds a layer between the outer world and my raspy os. Also OMV has kind of taken over my raspy, so I don't know if I would be able to run nginx/apache locally.
  • Using a reverse proxy and lets encrypt secures and hides the way to the raspy os.
  • Mounting an OMV-controlled directory for data makes sure that no-one can escape from my Docker container (as is described as possible here).

Is that correct? Is that secure enough? Do I need to learn more about the concepts to use them? Is there some risk that I totally neglected so far?

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  • what do you intend reverse- proxying from? are you saying that your users would need to reverse-proxy to connect to nextcloud, or are you going to reverse-proxy your nextcloud instance to a separate public-facing host, for example, shared hosting? – brynk Oct 28 '20 at 17:54
  • (ie. i your users will 'reverse-proxy' to use nextcloud, actually you're just saying they will need to connect to the device using some other mechanism, such as a vpn tunnel, and then use their browser for nextcloud) – brynk Oct 28 '20 at 17:55
  • @anjuta: ""Is that correct?" - there are too many questions in single post. Please put them into separate questions. "Is that secure enough?" - this is very abstract. "enough" - it is opinions based. Make your question more specific. – mentallurg Oct 28 '20 at 18:43
  • I don't know how to be any more specific. As clearly written above, I don't know much about information security. That's why I asked about a) risks in my plan and b) certain pieces of technology. – anjuta Nov 8 '20 at 17:41

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