Problem using transmission-daemon

[perdrix]

Please be gentle - I am not an expert ...

I have transmission-daemon installed on an Lunbuntu 20.04 system. I have created a torrent to distribute a file to some friends.

Problem is when I try to use a torrent client to dl it just goes to "connecting to peers".

If I connect to transmission-daemon using the remote gui, it shows me that it is using port 51413 as the incoming port. If I press "Test port" it says "Incoming port is closed. Check your firewall settings". So I opened terminal session and did:

Code: Select all

amonra@charon:~$ sudo ufw status
[sudo] password for amonra: 
Status: inactive
amonra@charon:~$ 

So I'm a little baffled as to what's going on ...

Help and guidance greatly appreciated.

[perdrix]

I thought I was on the way to solving the problem:

The network here has a Fritz! Box at the edge. Then the main router has its WAN port connected to the Frtiz! Box - the reason for that is the my main router has capabilities the Fritz! Box doesn't.

So, on the FB I went to the Internet/Permit Access/Port Sharing and setup two entries for that (UDP and TCP) to allow port 51413 through that router the second router.

On the Asus Router I set up Part Forwarding for 51413 to go to my Linux system that's running transmission-daemon at internal IP 192.168.1.100

Now when I ask transmission-daemon to test port 51413 it says it is Open (hurrah!).

But the torrent client still doesn't see the linux server (still saying "connecting to peers").

I have a *nasty* feeling I am been bitten by "double-NAT" but what should I now do? Turn NAT off on the internal router? Or what?