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Nextcloud zero day security (lemmy.world)

submitted 10 months ago by thisisawayoflife@lemmy.world to c/selfhosted@lemmy.world

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What is everyone doing? SELinux? AppArmor? Something else?

I currently leave my nextcloud exposed to the Internet. It runs in a VM behind an nginx reverse proxy on the VM itself, and then my OPNSense router runs nginx with WAF rules. I enforce 2fa and don't allow sign-ups.

My goal is protecting against ransomware and zerodays (as much as possible). I don't do random clicking on links in emails or anything like that, but I'm not sure how people get hit with ransomware. I keep nextcloud updated (subscribed to RSS update feed) frequently and the VM updates everyday and reboots when necessary. I'm running the latest php-fpm and that just comes from repos so it gets updated too. HTTPS on the lan with certificates maintained by my router, and LE certs for the Internet side.

Beside hiding this thing behind a VPN (which I'm not prepared to do currently), is there anything else I'm overlooking?

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[–] bjoern_tantau@swg-empire.de 33 points 10 months ago (7 children)

For protection against ransomware you need backups. Ideally ones that are append-only where the history is preserved.

[–] thisisawayoflife@lemmy.world 5 points 10 months ago (6 children)

Good call. I do some backups now but I should formalize that process. Any recommendations on selfhost packages that can handle the append only functionality?

[–] tuhriel@infosec.pub 2 points 10 months ago

Restic can do append-only when you use their rest server (easily deployed in a docker container)

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