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Public Key Authentication
The 'key' here is the chmodding... OpenSSH requires proper permissions!
ssh-keygen -t rsa -b 2048 scp .ssh/id_rsa.pub firstname.lastname@example.org:~ ssh email@example.com chmod 700 .ssh cat id_rsa.pub >> .ssh/authorized_keys chmod 600 .ssh/authorized_keys rm id_rsa.pub