Dear,
I have Synology NAS and I installed Transmission. By using local network with local gateway, I can use torrents through transmission and the port is open (ie: 51413 or other port). When a connect my VPN access (Hidemyass) in my Synology NAS, I can get a new IP Address and new gateway IP Address but the port of transmission is closed and the torrents cannot be used. In my Synology, Through Download Station, I can check my IP torrent and I have the correct new IP Address.
If someone have an idea of the cause of this issue.
Thanks,