I have uTorrent 3.3.2 installed on two computers and on both computers it says that the port is not properly forwarded when I do the built-in port test.
I followed this guide to forward the ports.
Application Protocol Source Net Port from IP Address Port to Enable uTorrent 1 Both 31090 192.168.0.103 31090 Yes uTorrent 2 Both 37065 192.168.0.104 37065 Yes
Do I have to add something in the Source Net field, or just leave it blank? I've applied the settings (Apply Settings) and rebooted the router (Administration, Management, Reboot router) but I still don't get a check mark (pass) on the port test. I also tried changing the Source Net to 0.0.0.0 but to no avail.
I've also checked the Windows Firewall settings. Two exceptions were added when uTorrent was installed, one for TCP and one for UDP. I also tried adding a port exception manually. I even tried disabling the firewall but to no avail.
Are these settings correct? I'm not sure about the Port from, Port to and Source Net fields. And is there another way to check if the port is in fact being forwarded to get a second opinion?
Update 1 - UPnP
I'm not sure if this matters but "Enable UPnP port mapping" and "Enable NAT-PMP port mapping" settings were enabled in uTorrent. But on the DD-WRT router, the "UPnP Service" was disabled. I have now enabled it, and also removed the manual port fortwards I had added earlier. I applied the settings and rebooted the router. Now I can see "Teredo" in NAT, UPnP, Forwards. So it seems to be doing something, but I still get the yellow check mark in uTorrent when I do the port test. While typing this, another "Toredo" entry just showed up for the second computer (192.168.0.104).
Update 2 - Now open
Okay, it appears to be open now. I guess enabling the "UPnP Service" on the router did the trick? Here's what it looks like now in the router settings.
The port appears to be open, both in uTorrent and on yougetsignal.com.
Update 3 - Manual forwarding without UPnP
I'm not sure I want UPnP enabled. Is it safe to have UPnP Service enabled? What kind of implications does that have? Does that mean the router will be dynamically accepting all connections on all ports as they come in? I still want to manually forward the port I want.
I have disabled the UPnP Service. After doing that, the entries in the "Forward" list (as seen on the screenshot above) were removed. Also, the yougetsignal.com website reports that the port is closed. At the same time, the built-in uTorrent port test reported that the port was still open. I don't trust that, it appears to be a false positive. So I rebooted the router, and now the port is reported as closed in uTorrent as well.
I currently don't have any port forwarding rules under "Port Forwarding". Where do I go from here? How do I manually set up a single port forward in DD-WRT without having to enable UPnP Service?
Update 4 - Got it!
I've gone back to square one and I think I got it now. I disabled "UPnP Service" and added only one forwarding rule for one of the computers under "Port Forwarding" menu. I then rebooted the router.
Now the built-in uTorrent port test says that the port is closed, but the web based port tester says it's open. I don't trust the uTorrent port test. So I'm pretty sure it's open now, not only because Yougetsignal.com says so, but because I got upload speeds of up to 500 KB/s and that's a good sign that there is outgoing traffic now.
While typing this I've also added a forwarding rule for the second computer and rebooted the router, and after starting up uTorrent on that machine (to begin port forwarding), it too now appears as closed in uTorrent but open on the web based port tester. It was showing up as closed at first, but I solved that by starting uTorrent activity. My guess is that the router was still blocking the port until I got some network activity going on.
Note how there's a small icon in the bottom right corner of uTorrent shows a green check mark. Whatever that means... This icon used to indicate that the port is open. At least that was the case in uTorrent version 1.6 or so. But now, if I click that icon I get to the port testing dialog, as usual, and if I do the port test I get a yellow check mark and a statement saying that the selected port is closed. Now what do you make of this?... at the very best it's an ambiguous and inconclusive result. If that tells us anything at all...
I don't know why it didn't work the first time. Looking back at it now, I see that have done everything correctly. Perhaps I forgot to click on the right buttons to get the changes properly registered with the router. There is sort of a "sequence" you have to go through. You first add the lines for port forwarding, then add the information, click Save once or twice, then Apply Settings, and then reboot. It's like a ritual.