You can create SSH keys using the Bash environment on the GPU cluster.
ssh-keygen -t rsa -b 4096 will create a private/public pair.
Private key is for you (client), public is for the server you want to connect to. For SSH autologin add the public key string to the authorized_keys file in
~/.ssh, and remember to
chmod 600 that folder. To connect with the PuTTy client you'll need to convert the private key to PPK format using PuTTyGen.