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 Post subject: Can't access speedcubing.com
PostPosted: Tue Jan 04, 2005 1:13 pm 
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Joined: Sun Jan 02, 2005 7:51 pm
Location: Toronto, Canada
I searched for this all over the web and these forums, to no result...

I'ts been over a year now, I simply cannot access the site http://www.speedcubing.com with my home connection. I've tried all sorts of different things, talked with my isp several times, they said even them cannot access the site :( they suggested I tried to contact people at speedcubing.com to see if there is some configuration setting over there that somehow blocks access to us.

I can access the site with my university connection though, but it feels bad not being able to access Ton's page from home :cry:

Does anyone experience similar connection problems to speedcubing.com? Or knows of someone running that site that could try to help me with this?

When I ping speedcubing.com the ip resolves, 66.226.64.8, but all requests time out. When trying a tracert to http://www.speedcubing.com, on the second hop it already times out the request to 200.138.225.254.


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PostPosted: Tue Jan 04, 2005 2:25 pm 
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Joined: Sun Jun 13, 2004 12:45 pm
Location: Rochester, MN
Do you connect directly to the Internet or do you have a router (perhaps a Linksys) in between you and the Internet?


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PostPosted: Tue Jan 04, 2005 4:42 pm 
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Location: Toronto, Canada
Thanks for the reply, I'm open to any suggestions.

I do connect through a router (though not a linksys), and all pertinent ports appear to be open. My friend also cannot access the site (same isp), with a different router even. If it were a small isp I would be led to believe they screwed up their configurations somehow, but this is the largest communication service provider in Brazil :? They've said there is no ip block or anything that could be causing this, so it seems to be a networking problem occuring in between speedcubing.com's server and my isp.


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PostPosted: Tue Jan 04, 2005 6:59 pm 
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Joined: Sun Jun 13, 2004 12:45 pm
Location: Rochester, MN
What has happened to me a few times is that my router gets junk entries in the routing table (stuff that has a netmask of 189.48.39.0) and it will "block" a few sites. I did a firmware upgrade and it worked fine then. But if your friend is having problems...hmm....


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PostPosted: Wed Jan 05, 2005 1:27 pm 
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Location: Toronto, Canada
Alkalund wrote:
Thanks for the reply, I'm open to any suggestions.


Step 1: Try the following link:

http://66.226.64.8

If you get a page saying "Nothing Here", you CAN connect to the speedcubing.com server, but there is a DNS problem somehow, somewhere.

If you can't connect to that page (and if you're using Windows) try typing the following command in a Command Prompt window:

tracert http://www.speedcubing.com

(There is probably a similar command for other OSes, but I have no idea what it would be.)

The results you should get should make it clear where the connection is failing. If it's in the first few steps, the problem is either your computer/router or your ISP.

If you get something like "cannot resolve domain name", try it again, but without the http://www.:

tracert speedcubing.com

Or try the IP address directly:

tracert 66.226.64.8

If I had to guess, I'd say the IP address will result in the "Nothing here" page, meaning the problem is a simple DNS server error. This can be easily avoided, but that's enough "ifs" for now. Let me know how all that goes.

Sandy


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PostPosted: Wed Jan 05, 2005 6:33 pm 
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Joined: Sun Jan 02, 2005 7:51 pm
Location: Toronto, Canada
Thank you Sandy.

The domain name resolves, but there is no connection. The tracert http://www.speedcubing.com gives 'request timed out' already on the third step, after reaching my isp.

I've called my isp again, they confirmed they cannot reach http://www.speedcubing.com, and said they cannot do anything about it, that the problem is likely on the speedcubing.com server... but I'm really not certain of it, specially given the way they quickly dismissed the possibility of a problem on their own end; not sure what I should do about it :?

By the way, thanks blogan for the reply as well.


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PostPosted: Wed Jan 05, 2005 7:33 pm 
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Joined: Mon Sep 09, 2002 2:19 pm
Location: Yaroslavl, Russia and Maryland, USA
I believe that's the ISP's problem. I would speak to them in terms of reaching a certain IP address, rather than reaching a web server. Not being able to reach an IP address early in the traceroute process definitely means a problem in their routing configuration, I would say.

--
Aleksey


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 Post subject:
PostPosted: Thu Jan 06, 2005 11:38 am 
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Location: Toronto, Canada
Alkalund wrote:
The domain name resolves, but there is no connection. The tracert http://www.speedcubing.com gives 'request timed out' already on the third step, after reaching my isp.


tracert and browsing to the IP address both fail in the same way as the domain name, right?

Aleksey is right, your ISP should be able to ping the IP address, regardless of almost ever other kind of problem. If you dare to keep hassling them, give it a shot.

I don't know enough about internet technology to even narrow down where the problem is occuring or what type of problem it may be! Both sides will continue to claim it's the other one's fault. It's a pickle.

Have you ever tried connecting to it from another computer (other than your friends) which may have a different ISP?

Sandy


Last edited by Sandy on Thu Jan 06, 2005 12:13 pm, edited 1 time in total.

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PostPosted: Thu Jan 06, 2005 11:47 am 
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Location: Yaroslavl, Russia and Maryland, USA
Sandy wrote:
I don't know enough about internet technology to even narrow down where the problem is occuring or what type of problem it may be! Both sides will continue to claim it's the other one's fault. It's a pickle.


If we have a packet destined to certain IP address and the packet is dropped at some point, then it's a problem of a router that does not know where to forward the packet to. That router is the one that responds to you last (giving you an echo response). From what I've read in this topic the router belongs to the ISP you connect through. That router does not know the next hop for packet destined to this 66.226.64.8 IP address of speedcubing.com. This is a configuration bug.

Sure, the other problem could be that the next router simply does not give back an echo response (response to traceroute program), but I find that highly improbable.

I work in the area of designing and developing routers from scratch. 8-)

--
Aleksey


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