Take the 2-minute tour ×  I'm setting up a VM based Linux Mint
14 Cinnamon dev env and just installed putty to connect to my
Ubuntu servers. Problem is that when I try to use
"username@hostname" or "username@ip" (no quotes obviously) then
I get the error "Unable to open connection to username@hostname:
Name or service not known".  If I use just the hostname or IP it
connects fine - it asks for the username and then correctly logs
in using my private key.  On my Windows 8 host machine I use
"username@hostname" in Putty's Host Name field and it works
flawlessly.  Does the Linux putty use a different syntax in the
host name field? I checked around but couldn't find anything.
share|improve this question I think you are answering your own
question, clearly it does have a different syntax since your
usual one does not work :). Why in the world would you want to
use putty for linux? Why not just ssh directly? –  terdon Dec 2
'12 at 13:39 @terdon The syntax differs using the command line.
I'm referring to the GUI, w