I downloaded and installed puTTy, however, when I launched it I got the following message:
The server's host key is not cached. You have no guarantee that the server is the computer that you think it is. The server's rsa2 fingerprint is: ssh-rsa 2048 80:f9:6c:bb:fb:22:b2:5c:1d:c7:17:98:99:6b:ce:a8
If you trust this host, press "Accept" to add the key to PuTTy's cache and carry on connecting.
If you want to carry on connecting just once, without adding the key to the cache, press "Connect Once".
If you do not trust this host, press "Cancel" to abandon the connection.
I am not sure what to do. When I installed PuTTy on windows, I had no problem. With the uncertainty of the internet, I thought that I had better check, with someone who might know. Thank you, in advance, for your help.