I have a Synology DS212+ NAS running DSM 4.2-3211 (current version). I use it for several purposes including torrent download using Download Station and a tracker that needs authentication.

My problem is that my download/upload ratio isn't updated, so it constantly falls down.

My NAS is behind a router, and I configured the NAT to forward ports 6890 to 6999 to the internal IP address of the NAS.

Here are the Download Station settings :

• TCP port : 6990,
• Sharing ratio : 900%,
• Sharing time : infinite,
• max download speed : 0 (no limit),
• max upload speed : 0 (no limit),
• BT protocol encryption : checked,
• max numbers of peers allowed by torrent file : 4000,
• DHT : checked, with port 6889.

When the DHT option is not checked, the NAS doesn't upload any files. I don't know what is this option for.

Can someone help me to solve this problem ? Did I miss any step, or does it come from the NAT ? How is the authentication managed by Dowload Station ?

(Sorry for my english) Thanks.