submitted 6 months ago by kionite231@lemmy.ca to c/piracy@lemmy.dbzer0.com

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Hello,

I am using qbittorrent for torrenting and my ISP has refused to open up firewall because of fucking "security" reasons. however I can still seed the torrent how is that possible? I mean all the incoming connections should be blocked right? isn't it how firewall works?

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[-] Grippler@feddit.dk 18 points 6 months ago

That sounds weird and super invasive...where is this?

[-] baggins@lemmy.ca 22 points 6 months ago

They're probably just using CGNAT.

[-] Grippler@feddit.dk 9 points 6 months ago

That's not a firewall though, which is what OP mentions.

[-] baggins@lemmy.ca 19 points 6 months ago

Does OP really know exactly what technology at his ISP is preventing him from "opening ports"?

[-] Grippler@feddit.dk 6 points 6 months ago

Maybe not, but you and I definitely dont, so let's stick to what they're actually saying instead of guessing.

[-] baggins@lemmy.ca 3 points 6 months ago

You commented that it's "super weird and invasive" for an ISP to "firewall" listening ports. It just so happens that CGNAT also has the same effect and is super commonly used right now.

I think I'm good 👍

[-] kionite231@lemmy.ca 5 points 6 months ago

Yes I know what's preventing me from opening ports. I also called my ISP they said we can't open the firewall so the incoming connections will be blocked.

[-] kionite231@lemmy.ca 8 points 6 months ago

It's definitely not CGNAT. I have tested it using traceroute.

[-] bier@lemmy.blahaj.zone 8 points 6 months ago

Ipv4 shortage lead to a lot of IPS adopting CG-NATs where they are sharing one exit IPv4 for multiple end users and that's why opening a port on the end user side won't do a thing as your just opening a port in the ISP Network and not to the Internet