uTorrent blocking all other internet traffic

Soldato
Joined
26 Jun 2009
Posts
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Location
Sheffield
Hey, I'm having a problem with uTorrent at the moment. I know the take of this forum on P2P, I feel exactly the same, I only use it for downloading TV, never films or music. I like to have series of things to watch on my iPod when sitting on the train. I pay my TV Lisence and I could legally record it myself and put it onto the iPod, which I am looking into doing, I want to find a device that will stream TV across my network but for the time being, I'm going to carry on downloading it. Even though in my mind it's morally fine, I'm planning on stopping doing it soon. I totally agree that stealing games, films and music is wrong though, and I don't use it for that.

So I hope this is alright with the moderators on here, if not it's perfectly fine with me, I'll look for solutions elsewhere.

The problem I have is that when uTorrent is open and running, I can't get internet access to any web browser on any computer on the network.

I have set up a static IP on the computer that is using uTorrent, and I have fowarded the port in my firewall, although this doesn't appear to be open when I run a port open check thingy.

My network is set up so I have a Netgear DG834G V5 as a modem with all the firewall, logging, wireless and anything extra turned off, then that is connected to a Sonicwall TZ170, both have the latest firmware.

I have created a service for the port in the TZ170 and then set rules to allow incoming and outgoing traffic on that port, yet the port is still declared closed by the checker?

It's night and day when uTorrent is open, it is working perfectly now, I'm getting a very stable connection, on speedtest.net the ping varies from 60-74ms, download varies from 5.1-5.3mbps and the upload varies from 0.22-0.24mbps. (Tested several times over the last couple of days and those are the highest and lowest figures I have seen).

When uTorrent is opened, it's almost instant, I lose internet connectivity on every computer on the network, but I get really decent speeds in uTorrent.

Again I'm sorry if this is deemed unnacceptable and I totally understand, and hope you don't all think ill of me . :P

Thanks for any help in advance!
 
Yeh the max upload is restricted to 175kbps, on speedtest.net I always get above 200kbps.

Should I restrict it more than that? If it was that I could understand it making the internet connection slow down but not stop entirely?
 
Yeh the max upload is restricted to 175kbps, on speedtest.net I always get above 200kbps.

Should I restrict it more than that? If it was that I could understand it making the internet connection slow down but not stop entirely?

It shouldn't stop it entirely, but it will slow it down. I normally restrict upload speeds to 50 kBps.
 
reduce the number of connections per torrent also. not a problem if there is only a handful of rseeders but if there is a few thousand ppl then it;s tempting to bump the limit up it mught be too much for your seup?
 
Done that but it makes no difference. :(

It really is instant, as soon as I open uTorrent, MSN signs out, firefox can't load any pages at all and my GMail checker looses the connection, then I exit it and they all come back on. :S
 
Who is your ISP?
Virgin Media seems to be throttling huge amounts if you use P2P, last night my connection was limited to about 0.5mbps when i should be getting closer to 10mbps.
 
Who is your ISP?
Virgin Media seems to be throttling huge amounts if you use P2P, last night my connection was limited to about 0.5mbps when i should be getting closer to 10mbps.

Did you download too much? VM clearly state that when you download too much during certain times you will get your speed reduced for 5 hours. That has nothing to do with P2P, any sort of download/upload can trigger it.
 
I use Tiscali, they throttle if I hammer it a lot but you have to really hammer it for them to pick up, like 4mbps or over for a few hours none stop.

I'm sure that wouldn't cause it though, as the P2P works perfectly, just doesn't allow me to use the internet on any of my computers.
 
I get this. I found after some digging that it's the Router and the whole Firewall / DoS defence stuff. I increased the packet limit and now it doesn't happen as often. :)
 
It is probably the SPI firewall on your router [incorrectly] thinking that someone is UDP/TCP flooding you. Go into the router interface and change the tolerances (upwards), or disable SPI if you have no other option.
 
If speedtest.net is saying your upload rate is 200kbps... then you need to set uTorrent to around 5 to 10KB/sec limit.

Note that uTorrent uses KB/sec (kilobytes/sec) rather than kb/sec (kilobits/sec... which is presumably what speedtest.net shows). You need to be careful that you aren't getting confused between the two units systems.
 
It is probably the SPI firewall on your router [incorrectly] thinking that someone is UDP/TCP flooding you. Go into the router interface and change the tolerances (upwards), or disable SPI if you have no other option.

Already disabled it, I did see an option to change the tolerance either.

If speedtest.net is saying your upload rate is 200kbps... then you need to set uTorrent to around 5 to 10KB/sec limit.

Note that uTorrent uses KB/sec (kilobytes/sec) rather than kb/sec (kilobits/sec... which is presumably what speedtest.net shows). You need to be careful that you aren't getting confused between the two units systems.

I've now set it to 5KB/s, seems to work now but I'll report back later.
 
Dropping it to 5KB/s made a big difference, but dropping it to 1KB/s has made a bigger difference. :P

With uTorrent open I get about 3.2mbps, when I exit it I get about 5.2mbps, so it's enough for normal use and I can always exit it if we've got all three computers going at once say. (Only happens for about 10% of the time my desktops on).

So thanks very much for your help dude!
 
5 Mbps down- and 0.2 Mbps upstream, that's not a very torrent-friendly connection. We probably shouldn't help you for that reason alone as all you can effectively do is leech :(

Of course you should read the uTorrent forums for advice, and you could probably review some of the connection settings to troubleshoot.

It's hard to tell from your most recent post, but are you saying that you get speedtest results of 5.2 Mbps as a baseline and this drops to 3.2 just by opening uTorrent? Or do you mean it drops to 3.2 with a torrent active?

According to information over on their forums, you have to be incredibly conservative with your settings because your upload bandwidth is so bad. Instead of playing with the router so it isn't freaked by so many connections you should optimise the uTorrent settings. Something along these lines (for v1.8.5),

Options -> Preferences -> Bandwidth
Upload limit: 10-15 KB/s
Upload slots / torrent: 2 or 3
Global max connections: 30-40
Max peers / torrent: 25-30
Options -> Preferences -> Queueing
Max active torrents: 1
Max active downloads: 1
Options -> Preferences -> BitTorrent
Untick DHT and Local Peer Discovery, tick Peer Exchange
Options -> Preferences -> Advanced
bt.connect_speed: 5
net.max_halfopen: 4


The latter two because you have so few peers connected.

I'm not sure if I understood correctly about your port-forward checking. A site such as GRC's ShieldsUP should only fail on 'Solicited TCP Packets' if you have a service listening at that time. Stating the obvious, even with correctly configured port forwarding the test will pass (Stealth) if uTorrent is not running.
 
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5 Mbps down- and 0.2 Mbps upstream, that's not a very torrent-friendly connection. We probably shouldn't help you for that reason alone as all you can effectively do is leech :(

I have mine set to 10KB/sec upload... and it's capped to 1400KB/sec download.

Doesn't cause a problem. As long as you seed it until you get a 1:1 ratio there's no problem for the swarm.
 
ADSL lines by their very nature aren't really conducive to 'good torrenting ethics' with respect to U/D ratios. But that's just the way things are with the current mainstream connectivity.

It's commendable if users get anywhere near a 1:1 ratio on a line like yours, but it's reasonable to speculate that not many do. One TV episode on your setup would take less than five minutes to download and another ten hours ETA to 1:1 ratio. These files are small. The drawback on my own connection is I can't game online if any torrents are active.

The average person probably doesn't leave their torrents active long after completing the download; possibly the same ones who can't help but bemoan a lack of seeders in the torrent comments section :)
 
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