source: http://geekeries.de-labrusse.fr/?p=2836

• Edit this file

  sudo leafpad /etc/ssh/sshd_config 

  and add at the end:

  Ciphers aes128-ctr,aes192-ctr,aes256-ctr,aes128-gcm@openssh.com,aes256-gcm@openssh.com,chacha20-poly1305@openssh.com,blowfish-cbc,aes128-cbc,3des-cbc,cast128-cbc,arcfour,aes192-cbc,aes256-cbc 

• Save the file and restart the ssh service:

  sudo systemctl restart sshd.service;  sudo systemctl status sshd.service;sudo systemctl enable sshd.service 

• for getting a popup en enter the SSH-passphrase:

  sudo dnf install openssh-askpass 

• Config in order Fedora is accessible by Affa of the SME: in /etc/ssh/sshd_config: modify the parameters (comment/uncomment) as follow:

  PermitRootLogin yes 
  
  RSAAuthentication yes 
  PubkeyAuthentication yes 
  # add following for fedora=23 to accept dss-keys (generated by Affa of the SME):
  PubkeyAcceptedKeyTypes=+ssh-dss
  
  #AuthorizedKeysFile .ssh/authorized_keys 
  
  PasswordAuthentication no #(that is optionnel !) 

• Take the modifications in consideration:

  sudo service sshd reload 

To be able to mount the SME on a mount point of the Fedora via ssh:

 sudo dnf install sshfs 

and mount the SME after having created and chmod777 the mount-point “/mnt/sme_intel” previously:

sshfs root@IP.sme:/    /mnt/sme_intel            -o noatime,uid=1000

If the login via SSH on the SME is protected by a key SSH, load it previously:

ssh-add /way/to/the/key/root@the_sme.rsa