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No Internet Connection on Server

We have a Windows 2000 Server which has an fixed IP-adress and an AD.
We also have a router which is the DHCP-server for the network.

The weird thing is that all computers have a internet connection, except the server.
It doesn't matter which DNS or Gateway I fill in on the server; it won't work.

Any usable suggestions?
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bkcpzh
Asked:
bkcpzh
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1 Solution
 
pseudocyberCommented:
In my opinion, all servers should be statically assigned an IP address.  Make sure the settings are correct - you have the correct IP address, subnet mask, and default gateway.  To get everything to work correctly, make sure you have an IP set for the DNS server as well.

Try pinging this website, 64.156.132.140.

if that works, from the server, try pinging the site by name, www.experts-exchange.com.

If you cannot ping, then try a trace route (tracert) from the server to this site's IP.  See where it fails and get on that box and see if the routing is correct.

Make sure the server isn't running any firewall software.
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Milkybar-kidCommented:
Try giving the server a reserved IP address from the DHCP server.
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bkcpzhAuthor Commented:
As you can read in my question; the server already has an fixed IP-address...

Add 1: Is there a way to reset all DNS-Server settings?
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pseudocyberCommented:
Yes, I did read that.  What about the ping and traceroute testing?
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bkcpzhAuthor Commented:
Didn't work...
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pseudocyberCommented:
Can you provide a little more details - like the ipconfig print out of the server, a machine that works, and possibly the equivalent of the router?

Is there any firewalls running - either on the network or on the server itself?

Can you do a traceroute and provide the detail?

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Fatal_ExceptionCommented:
First, troubleshooting this should start with these steps:

Following steps should be taken for troubleshooting such situations.  

Step-1: Ping Loopback IP address (127.0.0.1). Success shows that TCP/IP is properly installed.

Step-2: Ping local NIC's IP address. Success shows that NIC is working properly.

Step-3: Ping Default Gateway. Success shows that local physical layer connections are ok.

Step-4: Ping Remote IP address. Success shows that remote physical layer connections are ok.

FE
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triceiceCommented:
I agree with Fatal's troubleshooting steps, but all but the last should work based on bkcpzh's description. Why don't you try letting the server get it's IP settings from the DHCP server ( in other words let it act like those computers that can already see the internet) and then see if that will allow it see the internet. If that works then you can start by reconfiguring it to the static IP and clear the DNS cache "ipconfig /flushdns" and you have to check the settings in your router make sure it's not set to block the server.
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Fatal_ExceptionCommented:
Well, my first suspicion would be the DHCP scopes, and are they handing out the same IP address as one of your clients..  If so, then one of the NICs will fail, and possibly both..  So make sure you do not have duplicate IP addresses anywhere on the LAN.  You could use something like GFI's Security Scanner to look at all the systems on the LAN and ck the addresses too, if you wish..  Full version available for trial...:

http://www.gfi.com/lannetscan/

Also, you might want to try running the NIC at a lower setting, such as 10 Mbps or even half duplex (which I usually don't suggest since you are asking for collisions on the wire..)  :)

FE
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Fatal_ExceptionCommented:
Hope you got it!

and thanks!

FE
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pseudocyberCommented:
What was the problem?
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Fatal_ExceptionCommented:
I would like to know also..  :)
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