On the JumpBox you can turn on SSH through the JumpBox admin interface. Go to https://your-ip-address:3000 login with the password you set when you configured the JumpBox and then click on the SSH icon to turn it on. Once you do that you can log in using an SSH client as the user 'admin' or from the VMware console you can hit cmd-left arrow (on a mac, I believe alt-left on windows or linux) to get a login prompt on the console.
If this does turn out to be a permissions problem in the JumpBox let us know and we'll correct it in the next build.
Kimbro