this post was submitted on 13 Nov 2023
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What are the actual security implications of port forwarding? (alien.top)
submitted 10 months ago by Alt_Lightning@alien.top to c/main@selfhosted.forum
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Like, I hear all the time that you shouldn't open any ports on your networks fire wall for security reasons this and security reasons that. But what are the actual security implications/risks of forwarding a port for something like Jellyfin or a Minecraft server or something like that? Explain like im 16 (or something)

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[–] bufandatl@alien.top 2 points 10 months ago

The problem is a lot of people here are beginners and have no real clue about network security. And opening a port is opening a door. If you have a bouncer that clears people beforehand then you can keep the door open. But you will still need to keep your bouncer trained so he can take care of people you don’t want. Same with software. Keep it updated and have security enhancements in place like 2FA and analysis tools like crowdsec or fail2ban. And the open port might not an issue at all.

But if you open a device like a NAS (cough QNAP cough) then you have a higher security risk.

TLDR; if you know what you are doing it might not have implications.