In yesterday, i install a windows server 2008 r2 and enable remote desktop on it. Then from my ubuntu desktop by remmina i could connect ok.
Today, i cannot connect to it by
remmina. I check its connectivity by pinging it, That's OK, and also remote desktop is enable.
I search about it too much, and test any changes like change Advanced > security to other modes, Remove ~/.freerdp/unknown_host and ...
How to debug connection problem step by step? and What is the exact problem?
NOTE: I can connect to windows 2008 from another windows(7) client by
mstsc without any problem.