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Able to Ping but not map/access

Posted on 2004-11-02
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Last Modified: 2012-06-27
I have a Windows 2003 server on a small closed network with 3 other machines and a switch.  I am manually assigning IP addresses.  For some reason, on one computer w/ Windows XP I can ping the server 156.80.47.250 fine in the command prompt, but I cannot map a shared drive or find the computer in My Networks.  On another computer w/ Windows 2000 I can ping and map it no problem.  Both are setup with Client for MS Networks and TCP/IP w/ the following settings:

IP: 156.80.47.248 or .249
Subnet: 255.255.255.0
Gateway: 156.80.47.250

Two notes:
When I run net view \\156.80.47.250 I get a System Error 1231 has occured message....

This server is running SQL and when I try to connect to it using Enterprise Manager I can see the SQL server Name, but it can't connect.

Any thoughts on the problem...it must be really simple I'm just missing it...!
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Question by:bnicosia
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by:Mazaraat
ID: 12474389
Sounds like a DNS/WINS issue.  Are you running either?  If not, you will need to turn one of them on, or edit the local host file to reflect the IP and name of the server.  Also are you running as a domain or peer-peer?  If your in a domain, try removing the PC and re-adding it to the domain.
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by:Marakush
ID: 12474534
I see your running XP on the workstations...

Can you try a test for me please... Disable the windows firewall (Any software firewall on the workstation) on the workstation that is having the problem.

Marakush
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by:salvagbf
ID: 12474856
I agree with Mazaraat, it sounds like a DNS/WINS issue.  If you don't have any 98 or lower machines you probably don't need to be running WINS, try turning it off if you are running it.  Regardless, you should have DNS running on the server.  If you don't have it running, the following is a great link for installing DNS on a 2003 server.

http://www.petri.co.il/install_and_configure_windows_2003_dns_server.htm

-Bernie
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by:huntersvcs
ID: 12475002
You might also try mapping to the IP instead of the name - at least until you have the DNS/WINS problem solved.
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Author Comment

by:bnicosia
ID: 12475570
Thanks for the help...here are the answers to your questions....

I am not running a DNS or WINS server.
I have tried mapping to the IP, but that doesn't work either.  
I am running peer-peer.  

Few questions though...
How do I disable the Windows firewall?
I can connect w/ the Windows 2000 computer, no problems, mapping directly to the IP and such, do I still need to run DNS?
Does the LMHOSTS file have to be called LMHOSTS?  I have 4 files in that directory, none named LMHOSTS (one is named HOSTS).  I don't know that this is the issue since I can't even map to the IP address...

Any thoughts?  Thanks again,
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by:salvagbf
ID: 12475743
Is everything else working (network wise) on the machine in question? Can you get to the Internet? Is it just this problem getting to the server?

You can disable the Windows Firewall by going to the Control Panel, double-click Windows Firewall, click Off next to the red shield, click OK.

Name resolution on your network and the Internet will be more efficient if you have DNS running on your server.  It's a breeze to set up and takes up minimal resources to run, you may as well.

If you want to make manual entries, don't use LMHOSTS, that's for NetBIOS.  Use the hosts file in the same directory.

-Bernie
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Author Comment

by:bnicosia
ID: 12476306
Bernie, this is a closed small LAN w/ no access to the internet.  I don't have that Windows Firewall selection in the Control Planel (is this because I have SP1?).  Anyways, I don't believe the DNS issue is the problem, since I can't even map to the server with the IP address.  Both the LMHOSTS and the HOSTS file changes work, but that doesn't get me any closer, I can just ping the server name now too!  

Is it some strange security setting that might be upset?

Just a note, but I don't want to confuse things, I am connecting this computer to my office LAN also (but not at the same time). Enabling/Disabling each connection.  I am doing this same thing on the W2K machine w/ no problems.

Any more thoughts? Thanks,
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by:salvagbf
ID: 12476541
It could be a security issue.  What permissions are set on the server? It seems unlikely though because the other machines can connect, but who knows.

You say that you use this computer to connect to another network... Do you use the same network card to do so? I'm just trying to make sure it's not the network card that's the problem.

What network protocols do you have running on the network? Are you using TCP/IP, NetBIOS, IPX/SPX? Do you have a protocol installed on the other machines that isn't on this one?
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by:thribhu
ID: 12476806
hi,

see to that u have netbois protocol enabled.......

and make sure File and print share service is enabled..........

The below is generally not required but for better resolving and maintaining cache .........

go to C:\WINDOWS\system32\drivers\etc

here u see hosts file (open with notepad)

make entries
IPADDRESS     Computername
x.x.x.1              pc1
x.x.x.2              pc2

check LMhost file in the same location and make entries

 x.x.x.1    pc1                     # Discription of the system
 x.x.x.2    pc2  

still unable to resolve then let me know pls...............
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by:thribhu
ID: 12476895
i for got to tell u one more thing that

in winXP pls check the computer browser service.

start->run-> type services.msc

see if the computer browser service is started .... if not so, start it.......
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Author Comment

by:bnicosia
ID: 12476964
Thanks for your help, but still no resolution.

I've modified the LMHOSTS and HOSTS files, that doesn't help.  It lets me resolve the computer name when pinging but thats it.  

I use a different NIC card, but I wouldn't think that is the problem since I can ping.  

All the protocols are the same, just File and Printer sharing and TCP/IP (NetBOIS over TCP/IP is enabled).  These are the same setting as on the W2K machine.  
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by:thribhu
ID: 12477070
in winXP pls check the computer browser service.

start->run-> type services.msc

see if the computer browser service is started ....

or restart the service...........




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by:dunglc99
ID: 12480624
Make sure you config the same workgroup name on 03 systems (specially on XP).
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by:RuzRey
ID: 12480951
I hope I haven't missed something - 156.80.47.250 is a public IP address. This could cause weird routing problems.

Normally, I would expect your network to use private IP addresses, for example starting at 192.168.1.1 (netmask 255.255.255.0).

If you want to avoid DHCP, then each PC would have a HOSTS file like:-

192.168.1.1   pc1
192.168.1.2   pc2

and obviously each PC should be set to use these settings.

Do you connect to the Internet at the office? If yes, how?
What is the Gateway: 156.80.47.250 machine? What else is it connected to?

Ruz
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