[SOLVED] still cannot open a transmission port, what am I doing wrong?
from merompetehla@lemmy.ml to linux@lemmy.ml on 31 May 00:19
https://lemmy.ml/post/16279232

os: xubuntu 24.04

firewall: ufw

torrent program: transmission

On transmission I opened port 51401

On a terminal I executed sudo ufw allow 51401, which opens both tcp and udp ports for both ipv4 and ipv6. This is called forwarding, right?

I’m following github.com/…/Port-Forwarding-Guide.md but apparently I still don’t get it

ETA: thanks for your input, issue has been solved

#linux

threaded - newest

just_another_person@lemmy.world on 31 May 00:32 next collapse

No, you need to forward from your router as well.

Internet -> router -> machine -> firewall

You’ve only allowed the firewall on this machine to allow that port through. Forward that port from your router to your machine’s IP and port as well.

merompetehla@lemmy.ml on 31 May 00:47 next collapse

then how come I’ve always torrented without editing the router?

I’ve used privoxy, can that be the reason?

just_another_person@lemmy.world on 31 May 00:59 next collapse

Your client may have set a UPnP request that your router respects…hard to say. You didn’t post any router config info, so it’s hard to say what your environment looks like or was previously working. UPnP is frowned upon for security reasons, so it’s best to just forward if in doubt.

merompetehla@lemmy.ml on 01 Jun 21:37 collapse

I was still figuring out the right commands but thanks for your input

just_another_person@lemmy.world on 01 Jun 22:14 collapse

Np

forbiddenlake@lemmy.world on 31 May 02:48 collapse

You can still torrent without forwarding a port, for example by only making outgoing connections. But that may limit your speed, and figuring out forwarding should help.

merompetehla@lemmy.ml on 01 Jun 21:38 collapse

turns out this was the right answer all along

just_another_person@lemmy.world on 02 Jun 00:06 collapse

Well, at least you got it working.

frankfurt_schoolgirl@hexbear.net on 31 May 10:29 next collapse

It seems like that port needs to be accessible from the public Internet. Your local computer probably has at least one more firewall between it and the Internet, running on your router. You need to also forward the port on your router, which is what it says in the second half of the guide.

deadbeef79000@lemmy.nz on 31 May 22:55 collapse

Check if your ISP uses CGNAT for IPv4. If so, then you’re out of luck and IPv4 pretty forwarding will never work.

See if your router has an external IP in the CGNAT 100.64.0.0/10 range.

If you have IPv6 you can add a firewall rule to your router to allow the forwarding port through and at least have other IPv6 peers connect.