Thursday
Hello team.
A change was made to the network, and a new firewall was added to perform a network segmentation. I moved a workstation behind the new firewall. I tried to perform a new scan on the workstation but it is giving me the following error:
RPC Unavailable
When I try to use the Connectiontester tool the information that is displayed is the following for the workstation that is behind the firewall:
Ping: ok
Scanning TCP ports.
135 Open (EPMAP)
139 closet
445 closet
Checking reverse DNS
I need to check the information of the workstation.
Scanning Netbios (UDP)
Could not scan netbios
Scanning netbios (445)
Could not scan netbios
Scanning Active Directory
Operative System: Windows 10 Enterprise
Scanning WMI
WMI is Unavailable
Checking c$ Access
Deployment folder: OK
Access Rights: OK
yesterday - last edited yesterday
Yo Enzo - I'm not official support but.... try working with the firewall team to open port 139 for your endpoint you are testing on (only), then retry. I think WMI + RPC require file and print sharing protocols that communicate over 139. Or, if they don't want to loosen the rules for your endpoint, have them trace or view the rule/traffic logs for your endpoint and confirm.
Friday
Hello Enzo,
This is most likely caused by your firewall. But there could be a few other causes.
These are outlined in the KB article below along with possible solutions.
The RPC server is unavailable. 0x800706BA - Lansweeper
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