this post was submitted on 24 Mar 2025
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I've been running my server without a firewall for quite some time now, I have a piped instance and snikket running on it. I've been meaning to get UFW on it but I've been too lazy to do so. Is it a necessary thing that I need to have or it's a huge security vulnerability? I can only SSH my server from only my local network and must use a VPN if I wanna SSH in outside so I'd say my server's pretty secure but not the furthest I could take it. Opinions please?

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[–] [email protected] 4 points 1 week ago

My personal advice, secure it down to only permitting what needs it, regardless of your trust to the network.

Treat each device as if they've been compromised and the attacker on the compromised device is now trying to move laterally. Example scenario: had you blocked all devices except your laptop or phone to your server, your server wouldn't have been hacked because someone went through a hacked cloud-connected HVAC panel.

I lock down everything and grant access only to devices that should have access. Then on top of that, I enable passwords and 2FA on everything as if it were public... Nothing I self host is public. It's all behind my network firewall and router firewall, and can only be accessed externally by a VPN.