I've done this 4 times and SSH into the server via putty always gives me "Denied"! I tried to 'open port 22' Denied again. I have followed the instructions to the tee yet no go.
If you are doing this in virtualbox you need to add a local interface in virtual box itself before you can ssh to the virtual machine. If not ill need more detail or ask in the linux support forums on how to get ssh working.