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Unknown Microsoft Network Domains

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Hi,

There is something weird with our network, all of the sudden there are an additional 7 domains in our network, none of which are accessible. So when I double click on “My network places/Entire Network/Microsoft Windows Network” in there I will see 7 other domain that shouldn’t be there. How do I delete or get rid of these?

How can I find out if we’re being hacked or if this is a case a hack? Thanks!

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Tow things that come immediately to mind:

You have some workstations on the network that have not been told that they are part of the domain, and are setting up their own workgroup, hence the addition names in “entire network”

Your network is connected to the internet via a cable or DSL connection, without proper firewalling to prevent MS network info from being broadcast to the outside world. If this is the case, your network is visible to them as well.

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Something else I thought of: to check to see if you are visible to the internet at large, visit http://grc.com and run the “Sheilds Up!” test. This link should take you directly there (remove an spaces:

https://grc.com/x/ne.dll?bh0bkyd2

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These probably aren’t ‘domains’ but ghost workgroups They were ‘picked up’ when a workstation was added to the network and its network properties were set to member of xxxxxxx workgroup before joining the domain, so xxxxxxx shows up in network places. Trying flushing your DNS records. On the ws ipconfig /flushdns you may have to check the DNS and WINS records on your 2000 server and remove DNS references and/or tombstone WINS references to the ghost workgroups.

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