Hi Plamen,
I'm sorry, but I'm not sure I understand what you mean.
Right now, converter and destination (vCenter) are in the same LAN but the source (Linux VM) is behind a firewall. This case generates the error earlier mentionned.
I installed a converter in the same LAN than the source(Linux VM), so now the vCenter is behind the firewall. In this case, during the conversion wizard, I can't contact vCenter and get this error : fault.NoHostConnection.summary.
Regards,
Perrine