Would it be possible for me to make comments to other instances etc?

Solved: I can’t, it would only work with a public domain.

        • Dandroid@dandroid.app
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          1 year ago

          I’m not sure I understand the question. They are used to encrypt traffic and prove that the entity hosting the site hasn’t changed by using a digital signature. These two together make it so third parties can’t read the traffic coming through. This is a requirement for modern internet. Otherwise your passwords wouldn’t be a secret because literally anyone would see them.