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NTL blocking BitTorrent ports? (6881 to 6889)
I'm a BitTorrent user (BitTorrent is a P2P program for those who don't know what it is). In the last few days my BitTorrent download speed has gone down dramatically (I'm on the 600k package). After a bit of investigation I discovered the abysmall download speed was due to incoming connections from peers being refused (because somehow ports 6881 to 6889 were blocked). I initially thought I had misconfigured my software Firewall ZoneAlarm but it turns out the problem still exists even when ZoneAlarm is not running.
As I used to be able to accept incoming peer connections I can only deduct NTL has recently decided to block ports 6881 to 6889 to prevent users from achieving proper download speed with BitTorrent. Has anyone else noticed this problem? Can anyone confirm those ports are indeed blocked by NTL, and can we ever expect these to be unblocked? |
Re: NTL blocking BitTorrent ports? (6881 to 6889)
i too have experianced a slower to zero download speed thats without upload saturation i do get connection refused errors sometimes
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Re: NTL blocking BitTorrent ports? (6881 to 6889)
I've not had any problems with it.
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Re: NTL blocking BitTorrent ports? (6881 to 6889)
LOL, another one.
NTL are not blocking any ports other than the ones listed in thier original article, but just to allay your fears I have just spent nearly 15 mins testing the ports you mention both in and out of the NTL network [to various other networks I have access to] and they all work perfectly. FYI - ZA has a habit of screwing your network even when you think it is turned off (even when you think you have uninstalled it !!). |
Re: NTL blocking BitTorrent ports? (6881 to 6889)
Someone owes ntl an apology.
(curse my poor spelling) |
Re: NTL blocking BitTorrent ports? (6881 to 6889)
Had no problems at all with using bittorrent sites and I also use Zone Alarm.
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Yep, check this out for how to un-install ZA properly http://andras.net/router_aw/router_aw.html#UNZAP |
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I use Sygate Personal Firewall now and ive never had a problem with that. Touch Wood |
Re: NTL blocking BitTorrent ports? (6881 to 6889)
As I said before, no probs with ZA here, so my philosphy is "If it aint broke, don't fix it" :D
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Re: NTL blocking BitTorrent ports? (6881 to 6889)
Thanks for the replies. I'm more than willing to accept the problem is due to some software misconfigurations rather than NTL's fault. I'll try uninstalling ZoneAlarm completely to see if this fixes the problem. Note that BitTorrent *is* working though, it's just the D/L speed that's suffering due to peers being unable to connect.
The BitTorrent client at http://bt.degreez.net/ tells you when you're not accepting peer connections by switching the status LED colour to yellow (instead of green). |
Re: NTL blocking BitTorrent ports? (6881 to 6889)
I'm currently using Azureus.
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Re: NTL blocking BitTorrent ports? (6881 to 6889)
Out of Interest Supercow - what routers/pop site are you going through? you can find this out by running a trace and finding out what the router called xxxx-t2core-a...blah...blah or xxxx-t2core-b..blah..blah
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Re: NTL blocking BitTorrent ports? (6881 to 6889)
I resolved the problem btw - it was due to user incompetence!
With all the recent DNS problems with NTL I had enabled a transparent cache in the proxy server settings and "forgot" it was there. Having a proxy server set up was causing incoming BitTorrent connections to be refused. I had read that some ISPs were blocking ports used in some P2P programs so I jumped the gun and wrongly assumed poor'ol NTL was doing this! Thanks for all the help. |
Re: NTL blocking BitTorrent ports? (6881 to 6889)
Sorry to bring this up again but I am very suspicious of NTL attempting to do something to minimise use of BT.
On thursday, I was downloading through BT at near capacity not using the default ports, then my modem went offline, when it came back up dl/ul were reduced. Starting a new BT download today, I couldn't make any connections at all, until I shifted the listening ports away again, now speeds are back up quite high. It does seem highly suspicious. |
Re: NTL blocking BitTorrent ports? (6881 to 6889)
Had no problem connecting last night with the standard ports and I'm also using a firewall.
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Re: NTL blocking BitTorrent ports? (6881 to 6889)
Hallo all!
Ok, just out of interest here, I have assumed of late that the world of filesharing was just going downhill. To me, getting a full download rate is just laughable. I, on average get around 2-3kb/s no matter what I use. Normally use Kazza Lite but have since tried just about everything else under the sun, including BT, DC++, Shareazza, Limewire, you name it, I've tried it. But everything I try is just pants! Time to download an (out of copyright! :) ) mp3 - 6 years and 31 days! I'm using a cable modem which is connected to a linksys router (the 4 port one with 41 at the end of the name). I remember the halcyan days of getting 50/60 kb/s, but can't remember if this was only on ADSL. Am I missing something here? Thanks guys! (I lurk a lot but am a shy type!) P.S. the Shadow's BT client is always on Yellow and this is apparently a bad thing. I'm not running a firewall, windows or otherwise. |
Re: NTL blocking BitTorrent ports? (6881 to 6889)
i can only assume u have cocked something up somewhere :)
also my emule and overnet are currently running off ports 6883-6889 and they work |
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I can't think of what settings i'd need to fiddle with. Everything is pretty much set at default. really cheesing me off. :( |
Re: NTL blocking BitTorrent ports? (6881 to 6889)
well if ur torrent client is showing yellow that normally means its behind a firewall that needs ports 6881-9 open
if u connect through a router thats your problem if yoru running windows xp and that firewall is on then thats ur problem .. other than that id ask u sure you dont have a firewall on :) www.grc.com take the shields up test and see what it finds |
Re: NTL blocking BitTorrent ports? (6881 to 6889)
oh u are behind a router..
right well u need to have a quick lesson in port forwarding :) its in the manual and pretty easy you want ports 6881-6889 i think (as torrent will use 6881 and if thats being used will move on till it finds a suitble one) if u want in shadows client u can edit the ports to something else of your chosing anyway dunno what router you have (it has a 41 in it) but: http://www.linksys.com/support/top10...%20BEFSR41.asp or for the other router i found with a "41" http://www.linksys.com/support/top10faqs/BEFSX41/ have a read of the port forwading/trigger torrents good but i recomend emule (that uses port 4662 + 4672) and have a browse of sharereactor.com the emule web site offers a load of help so you cant go wrong or pm me i will help ya |
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Also check you're not using a proxy server in IE (tools > internet options > connection > lan settings) HTH... |
Re: NTL blocking BitTorrent ports? (6881 to 6889)
I am behind a router, but def not firewalled (too lazy! :) ). did shields up and specifically probed port 6881 which is stealthed! don't undrstand. wot can i do to open them up?
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Re: NTL blocking BitTorrent ports? (6881 to 6889)
i edited my post to help fella
go to the linksys webby link u cant go wrong when its not firewalled torrent will be "green" and downloads will go fast ..put your upload on 13 (if your on 600k) or 20 if ur on 1meg |
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Re: NTL blocking BitTorrent ports? (6881 to 6889)
*hides* :) its not to hard as long as you know Your IP and what ports you want to forward to your IP you will be fine
If your using a router that will be your internal IP ..it will look like 192.168.123.* no doubt |
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If you have a router with nat then you need to set up port forwarding or put the machine with BT on a dmz. HTH |
Re: NTL blocking BitTorrent ports? (6881 to 6889)
dont enable the DMZ option it will leave your pc open to all sorts of nasties thats why u have port forwarding etc
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Re: NTL blocking BitTorrent ports? (6881 to 6889)
I've managed to work out why I was getting slow speeds with BitTorrent: if the tracker is on port 80, NTL's transparant cache intercepts the HTTP request and connects to the tracker from the NTL proxy server.
When the tracker gets this request, it tries to open port 6881 on the proxy rather than on my PC, thus other BitTorrent users cannot connect back to my machine and I get a slow download. Has anyone worked out how to get round this? :confused: Apart from using Torrents with trackers on other ports, that is. Cheers |
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Wonder why no-one has posted the answer to this before?? (on this forum or any other). People must have wondered why they weren't getting good speeds on BitTorrent/NTL before. Strange. |
Re: NTL blocking BitTorrent ports? (6881 to 6889)
Thanks for the help everyone! Meant to do this weeks ago, but I've got a head like a sieve! Am downloading at blisteringly fast speeds now, so thanks for all your help!!
Squiggs |
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Re: NTL blocking BitTorrent ports? (6881 to 6889)
I use the Shadow Experimental Client to and usually get about 30-50kbps on a 600k NTL connection.I have opened ports 6881-6889.
Does 30-50kbps sound about right or can this be improved? Many Thanks |
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Re: NTL blocking BitTorrent ports? (6881 to 6889)
www.suprnova.org usually very busy and i connect to avg 40 but as long as ive not screwed up im happy :naughty:
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Re: NTL blocking BitTorrent ports? (6881 to 6889)
Try http://azureus.sourceforge.net with the latest Java 1.5beta JRE - much better than shaddow's.
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port 6881 blacklisted
Getting this message from peer to peer servers.anyone know what this means?
Thanks in advance. |
Re: port 6881 blacklisted
At a guess I would say that on whatever server you are getting it from they have blocked access to port 6881 on that server.
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Re: port 6881 blacklisted
Ok thankyou. So in you're opinion it's down to the server and not a problem with my pc?
How can i change port settings so that it wont use 6881 or wont that work? |
Re: port 6881 blacklisted
I doubt it's a problem with your pc, it's not the sort of message I would expect to see from local firewall software - and without knowing what p2p software you are using I could not tell you if you can change any port settings - but I would doubt it.
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Re: port 6881 blacklisted
Sorry should have stated earlier. Peer2Peer im using is Bit Torrent.
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Re: port 6881 blacklisted
ok, sorry, but I know nothing about bit torrent.
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This 'may' be caused by the NTL transparant web proxies? IIRC When you download a torrent then part of the process uses HTTP?
I know I had terrible trouble downloading the latest Mandrake Linux ISO's using BitTorrent as the server/tracker was seeing NTL's proxy IP and not my CM IP. Thankfully in my case Mandrake offer HTTP connectivity on port 8080 as well as 80 so it was possible to bypass NTL's proxy. |
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Some version's of the Bt Torrent software now use PeerGuardian. Some of NTL's ip range have been banned for some reason by the auther of that software. That might be what you are seeing, If not try changeing to port 6882 in your client if it allows you and it should work. :) |
Re: port 6881 blacklisted
BitTorrent is almost useless on NTL due to the proxies caching the tracker file... :(
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However the Trackers are on port 6969 which has nothing to do with the proxys. :) |
Re: port 6881 blacklisted
Some other people have had problems with this though:
http://www.cableforum.co.uk/board/sh...3&page=3&pp=15 |
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Yes and thankfully there is a fix in that thread as well :tu: |
Re: port 6881 blacklisted
Ive never had an issue with torrents i use the default ports 6881 - 6889 is it? well i only use 1 torrent at a time so it just uses 6881 :)
everyone else i know who uses torrents on ntl dosnt have an issue either as long as the port is open or forwarded - i use shadows experimental but have used his new tornado version and the azura? version that runs on java ..havnt noticed much difference between them apart from one looks pretty but as a it runs in the system try i dont care about pretties as long as linux d/ls at 120k im happy. |
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Re: [merged] NTL & BitTorrent (ports 6881 to 6889)
I have merged the two BitTorrent threads. :)
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Re: [merged] NTL & BitTorrent (ports 6881 to 6889)
your the best !
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Re: [merged] NTL & BitTorrent (ports 6881 to 6889)
I just got this error from Bittorrent on my NTL connection and I've also been getting poor download speeds- despite it being completely fine a few weeks ago.
I'm using the latest Azureus client, with no firewall and no router. I changed the port setting in Azureus and the download worked. Unfortunately, it's also been a bit up and down speed-wise. It started off at my connection's full speed, but keep slowing down to around 4/5kbps and then speeding up again. Right now it has levelled out at about 5kbps, although I'm uploading at a much faster rate- which leads me to believe it's something to do with NTL. Is there anything else I can do to ensure it'll work better on my connection? What if I were to change my IP address in Azureus- would this make any difference and what should I change it to? What's all this port-forwarding and how would I stop the NTL proxy messing things up? Sorry for being a complete n00b, but if anybody could help I'll be extremely grateful! :) |
Re: [merged] NTL & BitTorrent (ports 6881 to 6889)
Set your maximum upload to a few kb/s below your actual maximum upload.
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Re: [merged] NTL & BitTorrent (ports 6881 to 6889)
Hi,
Could anyone tell me the exact setting used in the shadow client - I'm with NTL broadband, and I configured my firewall to allow it to use the correct ports, but my download speeds are crap :-( Many thanks in advance. |
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Can I remind people that the speed depends how many peers/seeders are in the torrent. |
Re: [merged] NTL & BitTorrent (ports 6881 to 6889)
Hi all,
Desperate help needed here :-( I am with NTL on 1mb, but getting awful download speeds using Shadow Client. I have configured Norton to allow the ports etc, switched off my xp firewall, but no joy:-( I read somewhere in the forum that SHAD0W'S BT client lets you set your IP address so that the tracker won't use the NTL proxy. I'm pretty ignorant at this, and was wondering if someone could take the time out to give me an idiot's guide (no really, I am an idiot) on exactly how to do this :confused: Please ? Many ta's |
Re: [merged] NTL & BitTorrent (ports 6881 to 6889)
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Re: [merged] NTL & BitTorrent (ports 6881 to 6889)
oops :-(
Light is always yellow. |
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1. Went to personal firewall - checked on BT Client. 2. Allowed it to use TCP & UDP Protocols. 3. Allowed it to use ports 6881 to 6889 Still the same results :-( Do you know how I can configure the shadow client to set lets you set my IP address so that the tracker won't use the NTL proxy ? Thinking this may be my only hope. |
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Re: [merged] NTL & BitTorrent (ports 6881 to 6889)
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Does it have anything to do with this below ? Originally Posted by Timewarp I've managed to work out why I was getting slow speeds with BitTorrent: if the tracker is on port 80, NTL's transparant cache intercepts the HTTP request and connects to the tracker from the NTL proxy server. |
Re: [merged] NTL & BitTorrent (ports 6881 to 6889)
Can anyone help me with this please ?
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Re: [merged] NTL & BitTorrent (ports 6881 to 6889)
I Guess Not ?
:-( |
Re: [merged] NTL & BitTorrent (ports 6881 to 6889)
Although I don't use NTL, I have received the download error message "rejected by tracker - Port 6882 is blacklisted." The site had this help: Why is my port number reported as "---"? (And why should I care?)
The tracker has determined that you are firewalled or NATed and cannot accept incoming connections. This means that other peers in the swarm will be unable to connect to you, only you to them. Even worse, if two peers are both in this state they will not be able to connect at all. This has obviously a detrimental effect on the overall speed. The way to solve the problem involves opening the ports used for incoming connections (the same range you defined in your client) on the firewall and/or configuring your NAT server to use a basic form of NAT for that range instead of NAPT (the actual process differs widely between different router models. Check your router documentation and/or support forum. You will also find lots of information on the subject at PortForward http://portforward.com/). |
Re: [merged] NTL & BitTorrent (ports 6881 to 6889)
OK on my 600k connection thru a router im not downloading anymore than im uploading and my upload is limited to 13kb/s. Im currently connected to 2 seeds and 30 peers. My share rating has been between 0.75 and 2, now its at 1.25.
Router has ports 6881-6999 forwarded Xp firewall is disabled No errors in the bt experimental client Only ie is used now and again for sites In total there are 34 seeds and 1350 leechers Read every single faq and guide and problem yet still cannot solve this. Surely it cant just be that im getting these sh1tty speeds since 8am this morning? Any ideas? Thanks |
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Re: [merged] NTL & BitTorrent (ports 6881 to 6889)
Others are downloading at 300kb/s to 20 :(
And heres me at 9kb/s :/ |
Re: [merged] NTL & BitTorrent (ports 6881 to 6889)
Downquark,
How do you know they are being selfish? jtwn, Have you actualy tried throttling the upload bandwidth? Because if that maxes out then it will affect your download speed. |
Re: [merged] NTL & BitTorrent (ports 6881 to 6889)
put your upload on 5k or so for a while - and its torrent like any bit of software like it u can never expect full download speeds, but u can get lucky.
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Re: [merged] NTL & BitTorrent (ports 6881 to 6889)
BT is full of leachers now, it's gone bad, I can still max out my connection every now and then but it's hit and miss.
My advice, spend a day learning how to use news groups, sign up with a provider and go that way, max speed all the time, it's worth the effort. |
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Of course somepeople refuse to do it because bittorrent reminds them of communism :rolleyes: |
Re: [merged] NTL & BitTorrent (ports 6881 to 6889)
On all p2p apps i set my upload on netlimiter to 12~13kb.
On Azerus the health is yellow, yet i have done everything to make it not go onto yellow. In the faq - 'If you only see L connections, chances are you have a Port Forwarding problem' All my connections are L, yet the ports are forwarded and no firewalls or other stuff is on...i might just take that newsgroup route you mentioned... :/ Anyway i thought your download is proportional to your upload so even if you didnt bother uploading you wouldnt get much of a download either? |
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Use this port scanner to check the ports you have opened/forwarded. https://grc.com/x/ne.dll?bh0bkyd2 |
Re: [merged] NTL & BitTorrent (ports 6881 to 6889)
I did try this before and it did report 6881-99 were open.
Ive tried it again - ---------------------------------------------------------------------- GRC Port Authority Report created on UTC: 2004-06-02 at 13:20:10 Results from scan of ports: 6881-6900 0 Ports Open 20 Ports Closed 0 Ports Stealth --------------------- 20 Ports Tested ALL PORTS tested were found to be: CLOSED. TruStealth: FAILED - NOT all tested ports were STEALTH, - NO unsolicited packets were received, - NO Ping reply (ICMP Echo) was received. ---------------------------------------------------------------------- All ports closed? Is that normal? Those ports are forwarded and werent in use when I did the test... Thanks |
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Re: [merged] NTL & BitTorrent (ports 6881 to 6889)
Oh yeah, im using a different port in Azureus - 50160, i ran the test then and it said its open.
Ive also tried this but get 'Attempting connect to: 62.254.0.36 (cache8-nott.server.ntli.net) port 50160 Fail! Unable to connect. This likely means you need to adjust your port forwarding configuration, or there is no client running on that port. ' Dodgy ntl cache maybe? Just a non-technical guess :) I have tried putting a proxy in Azerus but i dont remember a difference. Health is still yellow on the torrent...i just cant get my head around this :(. Ive had a look at the logs..alot of requests, some are eventually cancelled, nothing to myself looks too bad but then again...to me. I might try ABC as a few people on a long bt thread on port forwarding problems said it worked for them. |
Re: [merged] NTL & BitTorrent (ports 6881 to 6889)
by the looks of this I am coming into this thread quite late and I dont have time to go over the last few pages as I am leaving for work in a minute.
By the looks of it you are trying to get your connection working in active mode rather than passive mode, correct?? I will tell you what got my connection working green in Shadows experimental with Zone Alarm Pro. opened ports 80, 6000-6999 for both incoming and outgoing TCP/IP on the trusted and Internet Zones. Manually specified BitTorrent to use ports 6000+ Specified my IP as bittorrent was detecting my proxy as my IP address and it was causing me to act as passive (yellow) rather than active (Green). When I did this BitTorrent said I would have to restart my client for the changes to take affect, this didnt work, it wasnt until I rebooted my computer that the changes took effect. Now I download at some mighty fast speeds and my upload works properly at last :D |
Re: [merged] NTL & BitTorrent (ports 6881 to 6889)
Ok i entered my ip in azurereus and now im in the green and receiving remote connections :)
but...now i am only uploading at half what i would without the ip (6-7kB/s) and my dl is, tbh, worse :( Help! |
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Re: [merged] NTL & BitTorrent (ports 6881 to 6889)
I guess, but i wouldnt of thought that many people on poor connections would be downloading a 4.5gb file..im just going to try another torrent now.
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Re: [merged] NTL & BitTorrent (ports 6881 to 6889)
Hi
I am on NTL 1 MEG Cable Modem using azureus. How do i open ports? I only have 6881 and 6882 open according to the check above. I have no firewall and no router. Also where do i enter my IP IN Azureus? What are the ideal settings i should enter into Azureus - i average 60 download but i should be getting nearer or over 100 on a well seede torrent. Thanks Dave |
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As for making it faster try limiting you upload to something like 23. Nothing else can be done, bittorrent isn't the most predictable of protocols. You shouldn't enter your ip unless you have problems but it's in config under force ip address on tracker or something. |
torrent downloads in belfast
any probs in the belfast area with torrent files. i have gone from a solid 125k a second to less than 10k a second. web browsing is unaffected and microshaft update come down at a good rate of knots.
cheers big sinky |
Re: torrent downloads in belfast
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Then I'd guess the uploader (s) arent uploading at the same rate. If browinf etc is fine, the only place the problem can be is the person (s) sending you the file. Check the amount of sources, look at them in detail and see how many of the sources have ALL the file. I dont use torrents now purely because I could get stuff faster on 9.2k dialup!! |
Re: torrent downloads in belfast
torrents do seem to jig about at different rates, but theres good quality stuff if you have the patience to wait for it! :)
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very true and :welcome: to the site , and what is your favourite flavour of bittorrent if i may ask ??????????? |
Re: torrent downloads in belfast
Shadow's always works for me at 55k no problem :D
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Re: torrent downloads in belfast
i started on shadows as soon as he released his first version did some testing for him - now im a azurus? man - its a well made client and well worth it
btw torrent speeds wont allways go top speed im sure u know why be happy with the 10k :) |
Re: torrent downloads in belfast
is this not an apple mac client? i am using the latest shadow client here btw. oh look on the bright side my download has gone up from 10k/sec to 25k/sec, with little bursts of 125k/sec. so no worries NTL must be ballixing about again. thanks for the replies guys.
cheers big sinky |
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Re: torrent downloads in belfast
speeds on all torrent clients seem to be the same for me - i just like azureus as its pretty and has some nice options
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Re: torrent downloads in belfast
just download and installed azureus. pretty slick :). does it resume BT downloads auto matically if your router/pc/modem goes down.
cheers big sinky |
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