how_to_ssh.txt

#==============================================================================#
# How to ssh from Mac to Ubuntu Server
#==============================================================================#

#========================================#
# Commands
#========================================#

vi sshd_config 
vi ssh_config 

# restart ssh after installing or editing
sudo restart ssh (host)
sudo systemctl restart ssh

# check ssh
sudo service ssh status (host)

#========================================#
# Install Software on Host
#========================================#

# Must install software on host (Ubuntu machine)
sudo apt-get install openSSH-client 
sudo apt-get install openSSH-server

#========================================#
# Steps to Success
#========================================#

# Steps to success for Mac to Ubuntu ssh

  *) ssh-keygen -t rsa (on host, Ubuntu)
  		-) Enter passphrase (2x)

  *) change permissions, chmod 600 for both private/public key (on host)

  *) add pubkey to authorized keys by just copy/paste with vi or any text 
  		editor (on host)

  *) add "sshd_config" file (on host)
  		-) PermitRootLogin no
  		-) PubkeyAuthentication yes
  		-) RSAAuthentication yes
  		-) X11forwarding yes

  *) transfer private key to Mac (to remote, email)

  *) set chmod 600 for that key (on remote, make it private)

  *) "ssh-add key_name" on Mac (remote?)

  *) Add key name to config file (on remote)

  *) restart server ssh with "$ sudo service ssh restart" (on host)
  
  *) connect from Mac with "ssh -Y username@IPaddress" or use the hostname after @