| Author |
Can't connect to Web
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| Tech Ranger 2004-03-14, 7:57 pm |
| I have a case of someone who has a SOHO network consisting of 3 PCs configured as a Windows 2000 domain. This LAN is connected to the Internet via Roadrunner and uses a Linksys router for NAT and PPPOE.
One of the PCs which is running Win2K Server is now not able to connect to any Web services. It is able to access mail and FTP services, but NOT HTTP. We have tried 2 different browsers to rule out an IE problem. The behavior is as if there were a filter in play here. However, I can find no filter either in the router or in the OS which could account for this. I don't know whether this is something nefarious or simply something with which I have no experience. Any ideas or suggestions would be appreciated. | |
| prezbedard 2004-03-14, 8:13 pm |
| just an idea but can you access any webpages by ip address?
google.com 216.239.57.99 | |
| Tech Ranger 2004-03-14, 9:01 pm |
| No. We can't even access the Web interface of the router using 192.168.1.1. Also name resolution of ftp sites succeeds. | |
| dgavrilovic 2004-03-14, 11:12 pm |
| i think what the poster is trying to say is that perhaps you have a DNS problem. if you can access a web page by IP address but not name, thats usually an indication.
:-) | |
| Deja-vue 2004-03-14, 11:23 pm |
| hmmm, very interesting.
smtp and ftp, but no http?
Has to do with IP-filtering, i am sure.
( on router or os)
can you ping anything?
(own ip-address or loopback?)
ping the router, flush DNS, re-start Server.
The Server isn't hosting any Sites, is it?
Can any other machine ping the server?
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| dgavrilovic 2004-03-14, 11:31 pm |
| the first thing i would do is restart everything. see if the problem goes away.
failing that, i would say there is a filter block on somewhere. it sounds like there are a few network divices. you might have something on somewhere. are you sure you checked everything?
the last thing, and this is a last resort.
i have noticed strange behavior of TCP/IP stack in win2k and xp when changing TCP/IP settings very fast. when doing it with vb scripts. sometimes it completely locks up all activity. the only way to unlock is reboot with disconnected cable and disable then re-enable LAN connection. | |
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| Question
Has that case ever had a software firewall on it? I had a client who had Zonealarm and after a while decided to play around a little with it. Screwed his internet connection up royally so uninstalled (deleted?) it, however the issue would not go away. A manual troll through the registry to remove and keys and a reinstall of the TCP/IP stack solved the issue. | |
| jarbob69 2004-03-15, 3:06 pm |
| Incorrect proxy settings within the browser, perhaps? | |
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| You don't happen to have a HOSTS file setup on this box, do you? might check that out... "c:\winnt\system32\drivers\etc" or maybe windows instead of winnt, but you get the idea, right?
Some spyware adds an entry, but then you scanned for this, didn't you. hmmm... Curious...
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| ruscorp 2004-03-15, 7:24 pm |
| quote:
Originally posted by Tech Ranger
I have a case of someone who has a SOHO network consisting of 3 PCs configured as a Windows 2000 domain. This LAN is connected to the Internet via Roadrunner and uses a Linksys router for NAT and PPPOE.
One of the PCs which is running Win2K Server is now not able to connect to any Web services. It is able to access mail and FTP services, but NOT HTTP. We have tried 2 different browsers to rule out an IE problem. The behavior is as if there were a filter in play here. However, I can find no filter either in the router or in the OS which could account for this. I don't know whether this is something nefarious or simply something with which I have no experience. Any ideas or suggestions would be appreciated.
I would isolate that router. RoadRunner doesn't use PPPoE so there's your first problem. PPPoE is used by DSL providers. Verizon Online DSL uses PPPoE.
If it's a RoadRunner the router should be set to "obtain an ip address automatically" and if necessary a cloned mac address. (Optimum Online needs this done) However I don't think that is necessary with TWC because I have Earthlink via TWC and didn't have to clone the mac. | |
| Tech Ranger 2004-03-16, 4:00 am |
| You're right about the PPPOE. I was talking from memory. Now that you mention it, the router only provides NAT, not PPPOE. He used to have DSL. Then I had set up PPPOE. In any case the other PCs have no problem. | |
| ruscorp 2004-03-16, 11:57 am |
| quote:
Originally posted by Tech Ranger
You're right about the PPPOE. I was talking from memory. Now that you mention it, the router only provides NAT, not PPPOE. He used to have DSL. Then I had set up PPPOE. In any case the other PCs have no problem.
Did that fix your problem? | |
| Tech Ranger 2004-03-16, 10:16 pm |
| No. I was just acknowledging that the router doesn't use PPPOE for this setup. Something is filtering this PC and I can't figure out what it is. | |
| ruscorp 2004-03-17, 9:20 am |
| quote:
Originally posted by Tech Ranger
No. I was just acknowledging that the router doesn't use PPPOE for this setup. Something is filtering this PC and I can't figure out what it is.
Did you put any "Advanced" settings into the router? | |
| Tech Ranger 2004-03-17, 10:20 pm |
| The problem is solved. In IE, there was a check mark next to "Use a Proxy Server for your LAN". There was no address entered. We don't know how the check mark got there. There was also a mark next to "Bypass Proxy Server for local addresses". As soon as we removed these checks, the problem vanished. Thanks for your help. | |
| ruscorp 2004-03-17, 11:33 pm |
| quote:
Originally posted by Tech Ranger
The problem is solved. In IE, there was a check mark next to "Use a Proxy Server for your LAN". There was no address entered. We don't know how the check mark got there. There was also a mark next to "Bypass Proxy Server for local addresses". As soon as we removed these checks, the problem vanished. Thanks for your help.
Glad it's fixed. | |
| Deja-vue 2004-03-18, 1:16 am |
| quote:
Originally posted by jarbob69
Incorrect proxy settings within the browser, perhaps?
This was the Answer then.
 | |
| Tech Ranger 2004-03-18, 8:45 am |
| Yes. I didn't look at the individual settings. I guess a worm may have messed with the http setting and left the other settings alone (meaning no proxy). Or maybe it was something more innicent. | |
| Tech Ranger 2004-03-25, 9:11 am |
| The problem returned repeatedly, so we tried to narrow down under what circumstances the proxy settings would suddenly change. It turned out that the user was launching a program provided by Earthlink called Total Access. The problem would manifest only after launching this app. We called Earthlink. They are aware of the isssue and told us to remove a component called Accelerator. This was the culprit. | |
| curiousgeorge 2004-03-25, 10:11 am |
| I can't remember off hand, but isn't there a group policy setting that prevents users from making changes to IE settings?
Just an afterthought. | |
| Tech Ranger 2004-03-25, 9:00 pm |
| If we hadn't solved the mystery, I was going to combat the problem with Group Policy. | |
| ruscorp 2004-03-26, 12:10 am |
| quote:
Originally posted by Tech Ranger
If we hadn't solved the mystery, I was going to combat the problem with Group Policy.
So you have determined the Group Policy did in fact possess WMDs eh?  | |
| Tech Ranger 2004-03-26, 8:36 am |
| Not neccessarily. But it has the capacity to produce them. | |
| diamond_dave34 2004-03-26, 9:03 am |
| ppoe may be your heart ache. disconnect router from modem or what ever it is connected to dont tell roadrage oh sorry roadkill darn i mean roagrunner anything and go into your set up page on linksys router. put it on dhcp and then reconnect ethetnet cable and then power up router. it happened to me with my adelphia connection.after that i havent had a problem. i even have a wireless network of 8 nodes going now. rememeber to that your connection is only as good as the support that you gat on the other end. go St. Joes ncaa champs sorry about my bad spelling it is 5am and i have been on my router lab all night. sure hope this cures what ails ya | |
| diamond_dave34 2004-03-26, 9:09 am |
| glad that worked out for you . sometimes troubleshooting comes down to the simplist things when we as humans exacerbate the problem. good for you and i am glad your frustration has ended. | |
| ruscorp 2004-03-26, 10:34 am |
| quote:
Originally posted by diamond_dave34
it happened to me with my adelphia connection.
Well there's your problem. Get rid of that god-awful excuse for a "cable company" called Adelphia.
My advise to you:
1.) Get DSL
2.) Get DirecTV or Dish Network
Tell Adelphia you'll come back when Cox, Charter or Time Warner Cable buys them. | |
| diamond_dave34 2004-03-26, 6:48 pm |
| when you have only one choice because the city you live in has a fat cat contract with only one provider and your over 7 miles from the nearest c.o. 18000 ft max for dsl. you pretty much work with what you got.hell i am going to open my own isp.i agree with you wholeheartedly . i guess that's why we do what we do ...you think.... | |
| ruscorp 2004-03-27, 12:40 am |
| quote:
Originally posted by diamond_dave34
when you have only one choice because the city you live in has a fat cat contract with only one provider and your over 7 miles from the nearest c.o. 18000 ft max for dsl. you pretty much work with what you got.hell i am going to open my own isp.i agree with you wholeheartedly . i guess that's why we do what we do ...you think....
Hehe. I'm on vacation in Killington, Vermont right now using roaming dial-up access/free Wi-Fi with my laptop.
Guess you the cable provider is out here? You got it! Crappy Adelphia! | |
| diamond_dave34 2004-03-27, 3:14 am |
| i just got my wireless cert and boy did i get a new lease on life (and a whole lot of free wireless access. anyway have a sliding time(that is california speak for a killer time).dont drink killlington dry later dave |
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