If you have a Windows Server 2008 box in a workgroup that you require access to one of the admin shares, it can be a little more complicated than with Server 2003. In my case, we had a SQL server on the back end which was trying to access the web server in the DMZ using PSExec.exe to remotely run a process. Executing PSExec and passing the correct credentials failed with “Access is Denied”.
No matter how good your network diagrams are, sometimes you need to verify the port your server/desktop is in. Cisco Discovery Protocol is a great tool for network admins when you need to quickly map routers and switches, and if you’ve got an ESX server connected you’ll see that it picks up CDP info too – but the vast majority of my managed systems are Windows. Here’s how to use TCPDUMP by Micro Olap to extend that functionality to your Windows boxes.
I recently resolved an ongoing DNS issue where the Active Directory Integrated DNS was loaded in both the Domain and the DomainDNSZones partition of AD - this is a separate issue and should be resolved differently. My problem when I tried to verify that the fixed DNS setup had propogated around my domain controllers, DC01 and DC02. DC01 kept failing “DCDIAG /TEST:DNS” with errors regarding the root hint servers. Googling about it was clear that a lot of people were suffering the same issue, but no article I read had correctly identified the solution.