The order of "account user connection"?

[clerevan]

Also,

I have a second question. Before I test a server Drive Free space using UNC through their path name, i want to change it using WMI and Drive from connection manager. After I change it, they say that RPC server is unavailable, I understand it might be because of the firewall since the target is on different subnet, my question is, what is the RPC server port? I've read that they dynamic port. Chould we change that into specific port? Because I don't want to open all dynamic for safety reason.

Thanks,

[KS-Soft Europe]

RPC uses dynamic ports (port number 1024 and above, Vista+ systems use ports range 49152 - 65535)
You may check the following article:
How to configure RPC dynamic port allocation to work with firewalls
http://support.microsoft.com/kb/154596
On the other hand you may use RMA agent to perform tests behind firewall (Passive RMA agent requires only 1 incoming TCP port to be opened, Active RMA does not require opened incoming TCP ports)