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I was reading this security advise, which says:

The neovim process binds itself to 127.0.0.1, so malicious actors on your LAN should be unable to interact with either your webextension or your neovim process.

There is a typo there, as "unable" should be "able", right?

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  • This is a networking question, not a security question: "why can't a node on the LAN access another node's loopback address?"
    – schroeder
    Commented Feb 2 at 8:52

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127.0.0.1 is the IP address for the loopback interface on a system. It is only reachable from the system itself and not from outside the system, including not reachable from the LAN. So there is no typo here.

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