I'm trying to connect to my Debian Google Compute Engine server through PuTTy (I've tried other alternatives too) but when I do I get the error "Disconnected: No supported authentication methods available (server sent: publickey)

![](https://puu.sh/5x8OY/ec3a73a225.png)

The google server came without a username and password, only a url to automatically login to their own terminal.