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Major DNS error

\015 I've already had a computer repair person spend several hours on this and couldn't fix it. \015\012\015\012My HP desktop is running XP Media Center edition. I'm on RoadRunner hard-lined to a modem and router (not connected wirelessly). All the equipment is fine, but I can't connect to the internet...or so it seems. \015\012\015\012If I type in a web address, such as google.com, etc. I get a "cannot connect to the internet" error. But if I type in the google IP address into the address bar, it connects fine. So for some reason, the DNS is not converting is my guess. \015\012\015\012I tried everything I could before having someone else look at it. When I tried the system restore, it gave me an error message saying it could not go back to the date I chose. I tried several. None worked. \015\012\015\012Also, there is a Windows SP3 that is trying to download the update and has not been able to. That was around when the problem seems to have started so I don't know if that triggered the problem or just is another symptom. \015\012\015\012So far, the computer guy removed my Norton's to see if that was preventing the download. He tried uploading the SP3 update via CD-ROM (unsuccessful). He determined the equipment is all working properly but can't figure out why the IP addresses work and not domain names. \015\012\015\012He suggested I back everything up and start from scratch...use the system console to "wipe" everything (my computer didn't come with a restore CD and he says its partitioned on the hard drive) and go back to bare bones. \015\012\015\012So my questions are: \015\0121. Is there no other option? \015\0122. If I did this, will it really work, theoretically? \015\0123. How do I do it? \015\012\015\012Thanks in advance.\015

Answers :

Solution #1

\015\012Method 1: Configure Windows Firewall to enable HTTP traffic\015\012loadTOCNode(3, 'resolution');To configure Windows Firewall to enable HTTP traffic, follow these steps:\015\012\015\012\015\012\015\0121.\015\012 Click Start, click Run, type Firewall.cpl, and then click OK.\015\012\015\0122.\015\012On the Exceptions tab, click\015\012\011\011\011\011Add Port.\015\012\015\0123.\015\012In the Name box, type HTTP. In the Port box, type 80.Note This procedure enables HTTP traffic. If you also require HTTPS\015\012\011\011 traffic for Secure Sockets Layer (SSL) sites, repeat these steps, but type HTTPS in the Name box, and\015\012\011\011 then type 443 in the Port box.\015\012Method 2: Configure network settings\015\012loadTOCNode(3, 'resolution');To configure network settings, follow these steps:\015\012\015\012\015\012\015\0121.\015\012 Click Start, click Run, type Firewall.cpl, and then click OK.\015\012\015\0122.\015\012On the Advanced tab under Network Connection Settings, click your network connection, and then click Settings.\015\012\015\0123.\015\012On the Services tab, click Web Server (HTTP), and then click OK.

Note If you must also enable HTTPS traffic for Secure Socket Layer (SSL) sites, click both Secure Web Server (HTTPS) and Web Server (HTTP).
Solution #2

\015\012\015\012\015\012\015\0121.\015\012Click Start, click Run, type Certmgr.msc, and then click OK.\015\012\015\0122.\015\012Locate and then right-click the certificate that you want to export, point to All Tasks, click Export.\015\012\015\0123.\015\012Click Next.\015\012\015\0124.\015\012On the Export Private Key page, click Yes, export the private key, and then click Next.\015\012\015\0125.\015\012On the Export File Format page, click Personal Information Exchange - PKCS #12 (.PFX), click to select the Include all certificates in the certification path if possible check box, and then click Next.

Note Do not click to select the Enable strong encryption (requires IE 5.0, NT 4.0 SP4 or above) check box.\015\012\015\0126.\015\012Follow the directions on the screen to complete the Certificate Export Wizard.\015\012\015\0127.\015\012On the client computer on which you want to import the certificate, click Start, click Run, type Certmgr.msc, and then click OK.\015\012\015\0128.\015\012Expand\015\012the certificate store into which you want to import the certificate.\015\012Typically, you want to import the certificate into one of the following\015\012certificate stores:\015\012\015\012\015\012\015\012•\015\012Personal\015\012\015\012•\015\012Trusted Root Certification Authorities\015\012\015\012•\015\012Intermediate Certification Authorities\015\012\015\0129.\015\012Right-click Certificates, point to All Tasks, and then click Import.\015\012\015\01210.\015\012Follow the directions on the screen to complete the Certificate Import Wizard.

Solution #3

To resolve this problem, modify the host header. To do this, follow these steps:\015\012\015\012\015\012\015\0121.\015\012Start Internet Services Manager, and then expand the Web server that you want.\015\012\015\0122.\015\012Right-click the Web site that you want, and then click Properties.\015\012\015\0123.\015\012Click the Web Site tab, and then click Advanced.\015\012\015\0124.\015\012Click the host header name that you want to modify, and then click Edit.\015\012\015\0125.\015\012In the Host Header Name box, type a name that does not include white spaces, and then click OK three times.
1. There are many options!
\015\0122. Yes, Probably, but perhaps not. "You don't know, what you don't know!"
\015\0123. Reloading from scratch on an HP is dependant on the model.
\015\012
\015\012Now if you would like to try some other options,
\015\012
\015\012You say you are connected to a modem and a router. Your modem is a router for all intents and purposes even if it has only a single lan port. If your using a second router, you are double NATing. The second router should not be configured as a gateway but as a router. Then your DHCP assigned IP addreses will be correct as well as defaualt gateway and DNS settings.
\015\012
\015\012Try this, do not use the WAN port for the second router, just plug it into one of the other ports. This will allow the router to work pretty much as a hub. If this works, reconfigure the router to be a router not a gateway.
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