I just got a RPi, and I'm using this site to try and connect my Pi, so I allowed other users to connect via the connection, and my Pi is connected, but when I try to put the IP address into PuTTY, it says "Network Error: Connection refused". I think it may have to do with the port, because I'm just using the default in PuTTY, but I don't know what else to use.
If you can access your RPi directly (plug in a keyboard and a mouse), make sure the
ssh service is running. Try checking
sudo service ssh status (I think there is also
sshd as an alias so
sudo service sshd status should give the same result).
If it says SSH server is not running, then this is the cause of your problem. Otherwise it might be something else (for example you put the IP of another computer that is online but doesn't have SSH).
You shouldn't have to change the port number, the default is 22 and Raspbian uses the default.