Cannot find DNS server

**JerryReis** · August 29th, 2005, 01:55 PM

Hi all

I been having this problem with my RR (Road-Runner)connection and can't figure out what to do, can anyone help that might no how to fix the problem I'm having.

here is what I have, I have Cable comming from the box in back yard going to house and into RR modem and then Cat5 cable going to Router ( DLink) and it's connected to 4 computer in my computer room at home,

I can get on the internet but I can't open all the website I want, it keeps giving me this message

( The page connot be displayed ) ,

The page you are looking for is currently unavailable. The Web site might be experiencing technical difficulties, or you may need to adjust your browser settings.
________________________________________
Please try the following:
• Click the Refresh button, or try again later.
• If you typed the page address in the Address bar, make sure that it is spelled correctly.
• To check your connection settings, click the Tools menu, and then click Internet Options. On the Connections tab, click Settings. The settings should match those provided by your local area network (LAN) administrator or Internet service provider (ISP).
• If your Network Administrator has enabled it, Microsoft Windows can examine your network and automatically discover network connection settings.
If you would like Windows to try and discover them,
click Detect Network Settings
• Some sites require 128-bit connection security. Click the Help menu and then click About Internet Explorer to determine what strength security you have installed.
• If you are trying to reach a secure site, make sure your Security settings can support it. Click the Tools menu, and then click Internet Options. On the Advanced tab, scroll to the Security section and check settings for SSL 2.0, SSL 3.0, TLS 1.0, PCT 1.0.
• Click the Back button to try another link.

Cannot find server or DNS Error
Internet Explorer

I tryed to change a few thing on the firewall and that didn't seem to help and All the updates are updated on all machine, and I have 3 Virus checker on all machines and they didn't see anythink as well, and I have a Webserver and it's having the same problems and it's a linux box, hummmm can anyone help....

oh and RR (Road-Runner) keeps changing the IP address once a week, and all that is doing is making me change the IP on all the machine, once a week is there a way to fix this problem, and that message I'm getting, been having the same problem for 3 weeks know.....

I'll take all the help I can get on this one

**flashingcurser** · August 29th, 2005, 02:13 PM

A couple of questions to help clarefy things:

1 What is "RR"?
2 What IP addresses are changing? Lan or world routable? Or dns?
3 Does your router have dhcp trurned on?

dan

**JerryReis** · August 29th, 2005, 02:16 PM

1. RR is Roar Runner

2 WAN

3. Does your router have dhcp trurned on? Yes

I been trying to change the DNS and the Ip address on all machines

**paul9** · August 29th, 2005, 02:21 PM

Is this problem on all the machines? Is it the right type of cable from modem to router?
I think it should be patch rather than crossover.

**JerryReis** · August 29th, 2005, 02:25 PM

Yes all the machine are having the same problems, I can ping an IP but will not connection on the net like yahoo.com I have to hit refresh a few time to get it to open anything,

and I'm also a cable technician, I have the right cable for the router, there are no cross-over cables on anything, but the Win2kserver

**paul9** · August 29th, 2005, 02:29 PM

Okay. First thing is to simplify. Try one pc direct to the modem.

**JerryReis** · August 29th, 2005, 02:31 PM

I tryed that and it did the same thing, I then call RR = roar runner and they said there are no problems, I then had them check the ping time on the modem and they said there were no problems,

sorry I'm at work right know, will be home in about 5 hours

I haven't done the fireware on the router yet, but I heard this doesn't fix anything

**meese** · August 29th, 2005, 02:40 PM

Usually problems like this are DNS related. You should check to make sure the "hosts" file doesn't have entries in it that should not be there.

**JerryReis** · August 29th, 2005, 02:41 PM

sorry you lost me on that one, where do I find that on the firewall

**paul9** · August 29th, 2005, 02:48 PM

If any of your pcs has a pots modem in, then try connecting to your backup connection number, to try and diagnose between a software configuration and a hardware problem.

**JerryReis** · August 29th, 2005, 02:56 PM

Originally Posted by paul9

If any of your pcs has a pots modem in, then try connecting to your backup connection number, to try and diagnose between a software configuration and a hardware problem.

Ok I tryed to connect one machine at a time to the modem and see if that would fix the problem and it did the same thing on all machines,

machines I tryed

Win2000 1
Win2000 2
Win2000Serv 3
WinXP 4
Linux 5
Win98 6
WinME 7

I tryed to connect all the machine one at a time to the modem to see if this would be a software problem and it did the same thing, I then call RR= Road runner and had them replace the modem and they did and still the same thing..

I'm starting to think it might be the router but not for sure

**meese** · August 29th, 2005, 02:59 PM

sorry you lost me on that one, where do I find that on the firewall

When you say firewall, do you mean your router? The "hosts" file is not on the firewall. It is a file on each pc. If this file was modified somehow, it can block access to websites. google.com's ip address is 216.239.57.99. If the hosts file points to a different ip address for google.com, then it can never be accessed.

**paul9** · August 29th, 2005, 03:00 PM

The hosts file is in C:\windows on a normal windows9x install, or try C:\WINDOWS\system32\drivers\etc on an XP system

**JerryReis** · August 29th, 2005, 03:00 PM

yes ( Firewall) is router

where can I find the file on a Win2000 machine

**meese** · August 29th, 2005, 03:02 PM

I tryed to connect all the machine one at a time to the modem to see if this would be a software problem and it did the same thing

How did you do this? Did you power down the router, the cable modem and the pc first. Then tuen on the router, wait 15 seconds, then turn on the cable modem, wait for it to link up, then turn on the pc? If you didn't then its quite possible none of them would work.

**paul9** · August 29th, 2005, 03:04 PM

Originally Posted by JerryReis

I'm starting to think it might be the router but not for sure

That is why I said direct to the modem, to make sure the router wasn't causing problems. If you are experiencing the same problems in Linux, then a software problem is extremely unlikely. Make sure you try at least one machine direct to the modem, without using the router.
And as Meese said, power down the equipment between tests.

**JerryReis** · August 29th, 2005, 03:04 PM

well I tryed to do it on all machine then I got tryed of messing with it and gave up, but yes I even reset all the boxes ( Modem and router and no change still the same thing

**meese** · August 29th, 2005, 03:11 PM

OK. Try what paul9 said using one machine connected directly to the modem (use an xp or w2k box). But first power down the modem and the pc. Turn on the modem and let it link up. Then turn on the pc. See what happens. If it still won't work, open the command prompt and type "ipconfig /all" and post the results here.

**JerryReis** · August 29th, 2005, 03:13 PM

ok will do it tonight at home,

thanks for everyones help

I'll be off here at 5:30 pm and it know 2:12 pm and I'll post what happen on ipconfig /all

If I do this then I'll be showing all the (Ip and dns address) to everyone on the net that might not be a good thing right

but thanks anyway

**paul9** · August 29th, 2005, 03:16 PM

What results do you get when you ping 66.102.7.99 (google)?
How many sites can you not reach?
What are your current dns settings?
I'm beginning to suspect that your cable feed may not be all it could be.
Edit out your own IPs, if you want.