this post was submitted on 23 Nov 2023
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...without snark or jumping down my throat. I genuinely want to know why it's so unsafe.

I'm running a Synology DS920+, with my DSM login exposed through a Cloudflare tunnel. I have 2FA enabled, Synology firewall enabled with these rules in place. I also have this IP blocklist enabled.

After all of this, how would someone be able to break in via the DSM login?

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[–] linerror@alien.top 1 points 1 year ago

your NAS runs software that is neither hardened for nor designed for direct internet access...

synology has had a plethora of exploits over the years... https://www.synology.com/en-global/security/advisory including but not limited to ransomware taking over the nas and encrypting all of your data... and that's just the exploits THEY KNOW ABOUT. synology often takes MONTHS if not over a year to resolve critical issues that normal customers won't be affected by with best practices...

synology's own guidelines clearly state

Do not expose DSM to the Internet unless necessary.

If you must access file services over the Internet, it is strongly recommended that you use a VPN to connect to your Synology device.

https://kb.synology.com/en-ro/DSM/tutorial/How_can_I_prevent_ransomeware_attacks_on_my_Synology_device

direct internet access to your nas is a timebomb. you will lose your data, others will view your data, and you put your entire network at risk by doing do.