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Why self host a password manager?
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this post was submitted on 08 Oct 2024
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Fully agreed.
Accessing Vaultwarden through a VPN gives me peace of mind that it can't be attacked.
Another great thing about Bitwarden is that it's possible to export locally cached passwords to (encrypted) json/csv. This makes recovery possible even if all backups were gone.
A VPN? you still need a reverse proxy/domain to use it don't you?
You can forward a Wireguard port, exposing it to the internet.
Hmm, interesting, how would I start doing this?
I use a Synology NAS BTW, so it already gives me a Synology subdomain to mess around.
Yes, Bitwarden browser plugins require TLS, so I use DNS challenge to get a cert without an open port 80/443.
The domain points to a local IP, so I can't access it without the VPN.
Having everything behind a reverse proxy makes it much easier to know which services are open, and I only need to open port 80/443 on my servers firewall.
DNS challenge? It is the 1st time I read about it.
I suppose in your LAN you need no VPNs then?
Yes.
Hmm maybe I should move mine to my VPN. Currently I have it publicly accessible so I can access it from systems where I can't run other VPNs for security reasons (work systems). I use a physical token with FIDO2 (Yubikey) for two factor authentication though, so I'm not too worried about unauthorized access.
Vaultwarden is one of the few services I'd actually trust to be secure, so I wouldn't worry if you update timely to new versions.
I hope it gets security audited one day, like Bitwarden was.
Because they use the official apps/web-vault, they don't need to implement most of the vault/encryption features, so at least the actual data should be fine.
Security audits are expensive, so I don't expect it to happen, unless some sponsor pays for it.
They have processes for CVEs and it seems like there wasn't any major security issues (altough I wouldn't host a public instance for unknown users).
That's a good point. I didn't consider the fact that all the encryption is done client-side, so that's the most important part to audit (which Bitwarden has already done).
I have my Vaultwarden public so I can use it at work too, but my firewall blocks all external IPs except my work's IP.