Maddy on the Dark Web

There is a bit about the Tech Learning Collective that is interesting (6:33).

My comment:

That was interesting, but I didn't get any of the blurred-out stuff. I feel privileged to have led such a sheltered life! It's a pity that people like the Tech Learning Collective need to share the same space as all that garbage. For a while it looked like port-knocking might be a way to make private networks. Do you know about that? It requires communities to meet IRL first and establish some shared secrets to bootstrap the secure connection. Maybe that's why I don't have access to any private networks. Maybe ask someone at the TLC about this. I actually wrote an article about this on my blog in 2014 called "Shadow TCP stacks in OpenBSD" but if you Google that you won't find it. Even if you put in the blog domain name it won't tell you anything. The first sentence reads "This design outline concerns the implementation of a protocol for dynamic routing by port-knocking in the OpenBSD packet filter pf(4). This protocol is intended for the purpose of protecting virtual private networks against denial of service (DoS) attacks from without."

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