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What do you guys do about usernames / passwords for your local services? (lemmy.world)

submitted 2 months ago by [email protected] to c/[email protected]

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Basically every local service is accessed via a web interface, and every interface wants a username and password. Assuming none of these services are exposed to the internet, how much effort do you put into security here?
Personally, I didn't really think about it when I started. I make a half-assed effort at security where I don't use "admin" or anything obvious as the username, and I use a decent-but-not-industrial password - but I started reusing the u/p as the number of services I'm running grew. I have my browsers remember the u/ps.
Should one go farther than this? And if so, what's the threat model? Is there an easier way?

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[–] [email protected] 11 points 2 months ago* (last edited 2 months ago)

Apps: SSO via Authentik where I can, unique user/pass combo via Bitwarden where I can't (or, more realistically, don't want to).

General infra: Unique RSA keys, sometimes Ed25519

Core infra: Yubikey

This is overkill for most, but I'm a systems engineer with a homelab, so it works well for me.

If you're wanting to practice good security hygiene, the bare minimum would be using unique cred pairs (or at least unique passwords) per app/service, auto-filled via a proper password manager with a browser extension (like KeePassXC or Bitwarden).

Edit: On the network side, if your goal is to just do some basic internal self-hosting, there's nothing wrong with keeping your topo mostly flat (with the exception of a separate VLAN for IoT, if applicable). Outside of that, making good use of firewalls will help you keep things pretty tight. The networking rabbit hole is a deep one, not always worth the dive unless you're truly wanting to learn for the sake of a cert/job/etc.