Ports suddenly close?

[Proximus]

Hi

First of all, I'm sorry if I re-post a problem already solved, I tried to look through 211 pages but gave up after page 5. That being said, here goes.

I have been using uTorrent a while, and before I reformatted my computer I had the same problem. Thing was that I was getting great speeds untill at a sudden point my ports were closed. Utorrent port checker just said they were closed. I checked in my router itself and the router showed that it was opend. Weird thing is I did not change any settings or whatsoever and it worked before. Was getting speeds over 200 kbps. After the format it worked great again, but untill today. The same thing happend again.

I have a modem that is hooked to a router. The modem has all ports open, the router only the ones I need to be open. The firewall from the router is down. Im not sure of the brand etc, I can check but that will have to be tomorrow. The status inside the modem I'm not sure of, but I can check the router if needed. I dont have a hijackthis log yet, but if needed I can also provide one of those.

If anyone needs any more information please ask Ill see what I can do. I really am confused with this problem and I hope someone can solve it.

Best regards,

Proximus

[Switeck]

Did your computer's local ip address change?

Are you using fixed port forwarding on the router or UPnP?

[Proximus]

My ip stayed the same. And sorry for asking but Im a little bit a noob in this stuff, but do you mean with fixed port forwarding on the router or UPnP that if I completly opend the modem? Or just a few ports opend to the router.

Thanks for the reply,

-Proximus

[Switeck]

The router has to have 1 port forwarded from it to your computer's LAN ip address (usually something like 192.168.x.x).

The modem shouldn't NEED UPnP to work, if it has a mini-router and/or firewall in it...THAT needs to be set in bridge mode or disabled.

uTorrent potentially uses all outgoing ports for TCP and possibly the same for UDP (if DHT is enabled). reverse DNS lookups (if you have Resolve IPs enabled...which I don't) may need more specialized packet types.

[Proximus]

The router has the port forwarded to my lan ip adress. It worked before, the checked said it was open, and it gave great speeds. I will try and look into my modem tomorrow and see what is going on in there.

-Thanks for the reply

Proximus

[jewelisheaven]

Does the OpenOffice torrent http://distribution.openoffice.org/p2p/ give you your "mythical" previously-experienced speeds with a green checkmark? If so then it's the swarm. If not, indeed something changed, and you need to figure out what. Start at one end of your internet and go to the other (either from the ISP's end or your end - you at the keyboard).

[Proximus]

Quite fast I get about 70 kB/s - 250 kB/s download and 0.3 upload. Whats going on? O_O

Also, it is a blue arrow pointing down. I dont know if its for any information, thought I'd mention that.

==================================Edit==============================

I hooked my modem onto my PC and there it said the ports were open, I disabled the UnPnp or something, but when I hook everything back to the router it says its closed again.

-Thanks for the quick reply

Proximus

[jewelisheaven]

Not quite the same icon's we're talking about Network icons vs. Torrent icons. Was the network status icon green during the OpenOffice download? Given the OOo torrent worked at your expected speed (up to 2.5 Mbit) you know once your connection is problem-free you will theoretically be able to download that speed as long as the peers in the swarm let you.

To think about this logically, you start with your modem -> router -> computer right? If it says ports are closed, then that's what you're dealing with. If when you change to modem -> computer and it says ports are open then you can presume the router settings are incorrect.

Please make sure under your "Port Forwarding" or "Virtual Server" page on your router that the port is the same one you are still using in uT (Ctrl-G) AND the destination IP address is your own. (Start -> Run -> cmd -> ipconfig)

As an ALTERNATIVE to forwarding, you can try to enable UPnP functions on the router (portforward.com has specific guides) since you don't need BOTH if one works correctly.

[funchords]

It sounds like your modem is configured as a router, so you actually have two NAT devices inline. Theoretically, this should work if configured correctly, but in reality, there are slightly different NAT implementations and these cause conflicts. I know that yours worked before, but this is possibly a problem now.

Can you configure your modem to act in "bridge" or "transparent" mode? That would rule-out any interference from being double-NAT. In that mode, the modem simply translates DSL signals to Ethernet signals and back again. It becomes a neutral device in the chain.

[Proximus]

To Jewelisheaven

Sorry for the misunderstanding, It is actually a yellow triangular (Network connection status). So indeed there must be something wrong at the router, but what I cant figure out as I've changed zero things. I rechecked everything at the router but could not find anything. Please do realize I am not proficient at router / modem things. So, I asked a friend of mine who did ICT to have a look at it, he could not find anything. He did mention something that the modem might have aquired a new IP and thus did not forward properly towards the router. However, I cant find this in the modem, could not find the places where to check and what not. So, Indeed I think this could be my router's problem. However, how to fix this.. I do not know.

To funchords:

Everything your saying sounds very logical, however I myself am not sure how to configure my modem into ''bridge'' or ''transparent''. I have tried to find something usefull on portforward.com but I couldnt really find anything that would help.

Thanks for the help,

Proximus

[jewelisheaven]

If your internal IP address (Start -> Run -> cmd -> ipconfig) is 192.168.x.x you can always try to access 192.168.100.1 in a browser to see if that allows you to look at or login to your ISPs modem. If it indeed is a combo router, maybe there is a button or setting there to apply the 'bridge mode' change.

[Proximus]

My LAN IP is indeed 192.168.x.x soI tried doing the 192.168.x.x.100.1 but it gave nothing.

[jewelisheaven]

The IP of your router is 192.168.x.1, I was saying generally the modem (behind the router, on your ISPs side, which the ISP controls access to) is 192.168.100.1. Sorry if I confused you, IP addresses only have 4 numbers.

:/ Since that IP didn't seem to work, see if your ISP has it listed somewhere where your modem IP would be. I don't have any other ideas

[buster152]

i have the same problem as the OP and i too have not changed a thing

btw my internet is road runner maybe we have the same isp

[Proximus]

Orignaly I had wannadoo, but company has been taken by orange. However, I dont know if this info is of any help but...As soon as I play online games I get connecntion interupts. It just loses connection. On Call of duty 4 It says 'Connection Interupt' and then resumes after severe lag spikes. ALso, at BF2142 it says connection to the server is lost , and then resumes after a few seconds.

-Prox

[jewelisheaven]

buster152: yes comcast got bought out in my area not too long ago, and I'm stuck with roadrunner... or verizon (not cost effective).

Proximus: Well when that happens to me it means the ISPs automatic throttling methods don't like 1) the upload speed I'm sustaining to peers OR 2) the concurrent connections I am using. I have had to basically limit concurrent connections to < 200 and use only half of my advertised upload to keep it from dropping out more than 3% of the time (up to 18 seconds every 10 minutes).

If you try doing one, or the other, or both of the procedures... Scaling back 5-10% at a time is usually gradual enough where you don't immediately cut off traffic. I would recommend keeping each setting for at least an hour to make sure variance doesn't play a huge factor.