REMOTE DESKTOP (MICROSOFT) NOT WORKING SINCE YOSEMITE UPDATE. ANY ONE KNOW A FIX FOR THIS ?

Question

MICROSOFT RDP HAS WORKED FINE WITH YOSEMITE. 
AIRPORT UTILITY IS UP TO DATE.
SINCE YOSEMITE UPGRADE THERE IS NO ABILITY TO CONNECT FROM HOME TO OFFICE.
IOS DEVICES CAN CONNECT BUT THEY ARE CELLULAR ANYWAY SO IT SEEMS TO BE CONNECTED TO THE WIFI NETWORK.
I AM RUNNING MY CONNECTION TO THE INTERNET ON A RECENTLY PURCHASED NETGEAR ROUTER.
THERE IS ALSO A TIME CAPSULE IN MY SETUP.
ANY SUGGESTIONS ?

Answer 1

Thats a good point. Let's troubleshoot network connectivity.
Open RDP, right click your connection and select edit, then copy the PC name.
open terminal Finder > Utilities > Terminal and type the following
telent YourPCName 3389
where "YourPCName" is the name you copied above. Hit enter
You won't get a "success" message or anything, if the terminal window just goes blank, then there is not a firewall/network issue.
If you clearly get an error, then it's either Firewall or DNS. Try the following in terminal
ping YourPCName
if it starts showing an IP address, line by line by line, then it is definatelly a firewall issue
if not, trying getting the IP address from the winders box by opening a command prompt and type
ipconfig
do all the above again but use the IP address in place of YourPCName