On Fri 25 Mar 2016 at 12:12:44 (-0500), Tom Browder wrote: > I have installed Deb on my laptop and reused my old Deb 7 .ssh directory. > > I can now ssh into the existing remote servers but cannot ssh into my > laptop from them (as a normal user)--I always get asked for a > password. So the remote servers recognize my old Deb 7 keys, but > apparently my laptop doesn't recognize the other servers' keys. > > I have compared files: > > /etc/ssh/ssh_conf > /etc/ssh/sshd_conf > /etc/pam.d/ssh/sshd > > between the laptop and the remote server and can see no significant > difference for a normal user. > > I can also see the host names in the .ssh/known_hosts file. I do see > that my laptop host's entries in the remote host's known_hosts are of > type "EDCSA" while the remote host's entries in the laptop's > known_hosts file are of type "RSA." > > Can anyone suggest where to look next?
What you lost on your laptop is ~/.ssh/authorized_keys which would have had the public keys from your ~/.ssh/ on each of the remote hosts. You can write them back by typing $ ssh-copy-id -i ~/.ssh/id_rsa.pub your-user-name@laptop on each of the remote servers in turn. Now, when you-on-the-remote-host try to contact the laptop with ssh, the laptop will use the public key (that you just copied) to ascertain that you-on-the-remote-host know the private key of the pair, and let you in. Cheers, David.
