Enter your geography password when prompted,  then type in the suggested command to test that ssh key authentication works correctly. Since all the machines in the geography network share a single filesystem, you will only have to set this up once in order to have passwordless login between nodes. Nevertheless, to avoid having to type your password when logging in from outside the geography network, you will need to set up another SSH key pair. Simply repeat the two steps above from your own computer, except this time you'll need to copy the public key to one of the gateway servers using full log in details, i.e.: