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dummy.net sufix blocks access to LAN machines by names

When trying to "ping" other machines on the LAN I get a reply such as "machinename.dummy.net" showing an IP 66.216.74.58
Most machines on the network use XP with Service Pack 2 installed. Some use Win2K.
All the machines were able to use Internet Explorer but unable to use our networked accounting package.
In an attempt to solve this problem all other networking options were installed (peer-to-peer etc.) on the XP machines through the control panel/add windows components.
Now those machines can easily use the accounting package but can't get on the internet except for Microsoft Outlook! But now I get a proper reply from a ping request.
The machines running Win2K still shows improper replies using ping but are all able to access the internet as well as all "local" resources.
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JudeXavier
Asked:
JudeXavier
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1 Solution
 
stevenlewisCommented:
need some info on your network
domain, or peer to peer?
how do they connect to the internet?
using dhcp or static?
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JudeXavierAuthor Commented:
need some info on your network
domain, or peer to peer? ....Domain
how do they connect to the internet? ....through 3COM 612 ADSL Router
using dhcp or static?  ....DHCP
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stevenlewisCommented:
check  your dc dns setup
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JudeXavierAuthor Commented:
Domain controller is NT with service pack 6 installed. DNS Server is not installed/enabled on the dc.
By the way, there is one XP machine which I did not install additional networking components on and that one CAN still access the internet normally.
In spite of this I would still like to resolve this issue about the "dummy.net"
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stevenlewisCommented:
XP/w2k relies heavily on dns to resolve host names
the ones that can use the internat are using your isp's dns, the ones that can't apparently are not
>>In an attempt to solve this problem all other networking options were installed (peer-to-peer etc.) on the XP machines through the control panel/add windows components.
what options exactly did you install?
the peer to peer enabled the built in firewall, but is supposed to configure it for peer to peer
remove it, and since you don't have dns setup in your network try a hosts file to reolve your internal ip's (for the accounting software)
NT
location
C:\WINNT\SYSTEM32\DRIVERS\ETC\hosts
also see here
http://www.smartin-designs.com/
here
http://www.smartin-designs.com/hosts_info_left.htm
and here
http://www.octopus.iastate.edu/files/11edit_hostfile.html
9x http://www.brother.com/european/networking/chapter18/chapter18_tcpip-hosts-file.html
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