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A nice place to discuss rumors, happenings, innovations, and challenges in the technology sphere. We also welcome discussions on the intersections of technology and society. If it’s technological news or discussion of technology, it probably belongs here.

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Lemmy server security (lemmy.antemeridiem.xyz)

submitted 1 year ago by [email protected] to c/[email protected]

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I'm almost ready with my lemmy instance server. Now what are some steps that are definitly worth doing after setup?

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[–] [email protected] 10 points 1 year ago

Practice standard server security.

Disable all inbound ports in the firewall except for those you absolutely need (like port 80/TCP, port 443/TCP, sshport/TCP, DENY all other inbound)
Use the principle of least privilege. Don't run your docker containers or web server as the root user. Make a new user, give it only the permissions needed in order to run the service definitely not sudo group. Set a strong password for those users, and disable remote/SSH logins for them
For SSH, use public key authentication, disable password login afterward
Instead of fail2ban, I like and would recommend Crowdsec. Needs some fiddling for Lemmy though, due to rate limits and federation