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.
JudeXavierAsked:
Who is Participating?
I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

stevenlewisCommented:
need some info on your network
domain, or peer to peer?
how do they connect to the internet?
using dhcp or static?
0
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
0
stevenlewisCommented:
check  your dc dns setup
0
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"
0
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
0

Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today
Windows Networking

From novice to tech pro — start learning today.

Question has a verified solution.

Are you are experiencing a similar issue? Get a personalized answer when you ask a related question.

Have a better answer? Share it in a comment.