Network and Internet Connection Question

[Tigger2k]

I have recently purchased the SMC 7004ABR Barricade router for use with my home network and DSL connection. However, all except one of my machines is able to connect to the internet. The last one can see all other machines on the network, but will not connect to the internet. Thoughts? Suggestions? Ideas? Anything that I might be doing wrong?

You assistance is appreciated.

Tigger2k

 

[Lord Evermore]

Make sure all the settings in network properties are set to automatically aquire IP and DNS server.

What OS are you using?

What is the IP address your machine is getting? Are you able to bring up a site using just the IP address? Are you able to ping an IP address? Is the browser configured to use a proxy server?

 

[Tigger2k]

Lord Evermore -

All settings in network properties are to auto acquire.

OS - Win98SE

IP address on machine (assigned via DHCP from router) 192.168.2.6.
I am unable to bring up a site with just the IP address.
I am able to ping all the other machines including the router on my network.
The browser is not configured to use a proxy server.

This machine is setup just like others on the network, they work, it does not.

Your assistance is appreciated.

Tigger2k

 

[JackMDS]

Take a look at the TCP/IP parameters.

Put it on all machine and compare.

Download DrTCP: <a target=new class=ftalternatingbarlinklarge href="http://www.dslre
ports.com/front/DRTCP021.exe">http://www.dslreports.com/front/DRTCP021.exe</a>

Run the program, it will show the current settings of TCP/IP parameters. Write them down.

You can change any variable that you want, click Apply, and reboot the computer, if no good; you can always change to your original values.

Start with:

MaxMTU - DSL=1492 Cable=1500 DialUp=576

Tcp Receive - 255552

Window Scaling - Yes

Time Stamping - No

Selective Acks - Yes

Path MTU Discovery - Yes.

Black Hole - NO

Max Duplicate - 2

TTL - 64

 

[nigma999]

My suggestion would be to check the router configuration. Sometimes they will only be configured to hand out a certain number of addresses and perhaps you have reached that limit. A quicker test might be the release one of the other machines, and try and renew the one having trouble.

 

[Lord Evermore]

The default is usually 100 IPs for the DHCP server. Since he's getting an IP, that's not the issue.

Another test would be to ping a web server that is known reachable on one of the working machines. Yahoo for example. On a working machine, ping www.yahoo.com and write down the IP address. Then go try it on the non-working machine. You could also try that with your ISP's own DNS servers (is the non-working machine getting the same DNS servers that the working machines do?).

 

[Tigger2k]

I was able to ping the IP address for yahoo.com with no problem on both machines. However, if I pinged www.yahoo.com I got "Unknown Host www.yahoo.com" on the non-working machine.

I am at the point were I might just reinstall the OS and see if that fixes the problem.

All assistance appreciated thus far.

Tigger2k

 

[WarmAndSCSI]

Originally posted by: Tigger2k
I was able to ping the IP address for yahoo.com with no problem on both machines. However, if I pinged www.yahoo.com I got "Unknown Host www.yahoo.com" on the non-working machine.

I am at the point were I might just reinstall the OS and see if that fixes the problem.

All assistance appreciated thus far.

Tigger2k

Sounds like a DNS problem to me. There is a program that messes up DNS locally, though - it tries to add custom TLDs and messes up DNS completely... can't remember what it's called. If you browse through your Add/Remove program list, I bet you'll know which one it is. Maybe somebody here knows, too.

 

[Tigger2k]

I looked through the add/remove programs and do not see anything that looks out of line. Does anyone recall anything remotely similar to what TheUnhappyCamper is mentioning?

Please, before I reformat and reinstall, I would like to resolve this matter. Reinstallation can be a bit of a pain and very tedious.

Thanks,
Tigger2k

 

[WarmAndSCSI]

Originally posted by: Tigger2k
I looked through the add/remove programs and do not see anything that looks out of line. Does anyone recall anything remotely similar to what TheUnhappyCamper is mentioning?

Please, before I reformat and reinstall, I would like to resolve this matter. Reinstallation can be a bit of a pain and very tedious.

Thanks,
Tigger2k

You'd only have it installed if you installed some p2p software like eDonkey or Morpheus I think... KaZaA doesn't install it. I can't remember exactly which one does.

 

[Lord Evermore]

Kazaa Lite may have installed a modified hosts file.

Look in the Windows directory, in System32\drivers\etc and there's a file named HOSTS. It's a flat text file, open it in notepad. If there are tons of entries then something has modified it. You can delete everything past the first entry, which should be 127.0.0.1 localhost. It might allow ads to appear again though if you'd installed kazaa lite or another app which blocks out ads.

But, since you're getting "unknown host", that means that your system can't find an IP address at all. If the HOSTS file had been modified, you would be finding an IP it just wouldn't work. The HOSTS file acts sort of like a local DNS server -- when you try to go to a domain name, your system looks at the HOSTS file first, and if the domain name isn't listed then it goes to the real DNS server. It sounds like you aren't reaching your DNS servers.

Check what DNS servers are listed in the non-working system, and see if you can ping the servers. Check whether it's the same servers that the other computers use.

 

[Rogue3]

I am getting very much the same problem and it's driving me crazy! The only thing is my configuration was working just fine, I shut down for the night, and then the next morning it was gone. I cant access the internet anymore, but I can see the other computer and transfer files just fine.

I have some software that is supposed to get rid of spyware type programs that I used to run a scan on that day and think that maybe it did something to the system. I have not yet tried to uninstall, but I did do a reinstall of XP (just over the top) and it did not solve my problem.

 

[Tigger2k]

All machines on the network appear to be getting the same settings, excluding IP address of course. The DNS Server is the same for the working and non-working machines, both have the router. Is this correct?

Based on what Rogue3 stated, about reloading OS and still having problems, I am now concerned. I was hoping if I did a fresh reload of the OS, everything would be fine. Just time consuming.

Ideas/ thoughts?

Tigger2k