this post was submitted on 13 Jun 2023
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Piracy: ꜱᴀɪʟ ᴛʜᴇ ʜɪɢʜ ꜱᴇᴀꜱ
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Is port forwarding actually needed for downloading? I thought torrenting used automatic ephemeral ports that stayed alive while you're connected to the swarm (I am talking out of my ass, I don't know how it works, I just know I've never needed to port forward for torrenting).
Does this Mullvad change entirely kill torrenting? Or does it only stop initial seed torrents?
No it doesn't stop it, just seed torrenting as you say. Makes it harder for others to download from you if they too do not have open ports. Got to facilitate sharing is caring.
A VPN acts like a NAT layer, so you basically have to open a port forward in order for traffic to dial your number, so to speak.
It may be in your case that you have UPnP or similar set up, so that your router automatically picks up your open port. Not viable for VPNs which tend to service enough clients to qualify as CGNAT, so we set up fixed ports.
Edit: Looks like I was wrong about not viable, seems like ProtonVPN has a NAT-PMP switch in their config
I believe if no one is having port forwarding (for instance for torrent where there is only a few people) it's not possible for peers to connect between themselves?