Selfhosted
A place to share alternatives to popular online services that can be self-hosted without giving up privacy or locking you into a service you don't control.
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You cant. You can only do your best to make it as secure as possible, but given enough time, someone can break it.
Basic tips:
For ssh specifically, lock down your sshd config, make sure only key-based auth is enabled, and maybe as an extra step, create a dedicated user, and jail it by only allowing it access for the commands you need to interact with.
Mind expanding on tip #2?
Not sure I can expand on it a ton more in a way that will make sense if it already doesn't sound familiar.
Basically, there are various methods to authenticate yourself to most services. Password is usually the weakest and most succeptible to brute-force and social engineering. There's certificates, key pairs, RBAC...etc. You can even setup TOTP/MFA really easily for anything that supports it these days. Just don't leave a service hanging out on the Internet to get brute-forced by password though.
If you're unfamiliar with this, start with SSH and key pairs. It's probably the simplest intro and you can be up and running to try it out in seconds.
Got it, I’m aware password auth can be brute forced, sadly many services don’t support more advanced auth methods so I’ve got a couple homelab apps that can only do password auth. I’m using very strong passwords and 2FA where available, and have been looking into an SSO solution like Authentik, but again not all services are supported.