this post was submitted on 04 Jul 2023
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AskBeehaw

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ELI5: Why can't defederation be one sided? (beehaw.org)
submitted 2 years ago by LimitedBrain@beehaw.org to c/askbeehaw@beehaw.org
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I think I understand how the federation system works currently and I'm not sure if I think this is a good thing, but why does federation require the entire link between communities to be broken?

Like say that Community A wants to block out Community B. That's fine, but can Community B still see posts on A? And if not, why not?

And to go further, if I'm part of Community A and I still want to interact with Community B, why can't I? Like is there a reason for forcing users to only interact with communities that are federated?

Again, I understand there are restrictions with data and how things currently work. I'm just asking from an abstract perspective about the fundamental ideas.

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[–] Lionir@beehaw.org 1 points 2 years ago

It totally can. It's just not a feature at the moment. There's many federation restrictions that can exist but currently Lemmy only knows of like, ~3.

  1. Open to everyone and everything
  • So everything is allowed, full-on communication
  1. Open to everyone and everything but with a blacklist
  • So everything is allowed, full-on communication however blocklisted Community B becomes "dead" and can't interact with Community A.
  1. Allowlisted community
  • You can only interact between allowlisted communties however when you go to Community B (allowlisted), you could see and interact with people from Community C (which is not allowlisted!) when in a Community of B but not of A. However, people from A cannot see or interact with communities of C and vice-versa.