How to scan Systems behind firewall...

[Guru_Prasad]

Dear Admin,

We have few systems which are behind firewall. We enabled port 9524 and 135 in the firewall for Lansweeper. But even then, when we checked it is showing the below error and reporting to LS but not scanning the system completely (shows in RED).

Please let me know how to make it work if the system is behind firewall.

Note:The below report took from testconnection.exe utility.

Remote WMI test
-----------------------------------------------
\root\cimv2 Remote WMI access test FAILED
The RPC server is unavailable. (Exception from HRESULT: 0x800706BA)

Remote Registry test using WMI
-----------------------------------------------
\root\default Remote WMI access test FAILED
The RPC server is unavailable. (Exception from HRESULT: 0x800706BA)

Regards,
Guru.R

[Hemoco]

This is the list of ports needed:

Clients to Service (if lsclient or lstrigger is used)
Port: 9524/TCP (this port must be open on the firewall of the lansweeper scanning server)

Service to clients
1) Port: 135/TCP (DCOM to Establish initial session for WMI)
2) Random ports (WMI Data)

More info:
http://msdn.microsoft.com/en-us/library/aa389290%28VS.85%29.aspx
http://msdn.microsoft.com/en-us/library/bb219447%28VS.85%29.aspx