SSH

Generate Key

ssh-keygen
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~/.id_rsa
~/.id_rsa.pub

Connect

ssh -i myprivatekey.pem -l myuser myhost

Authorized Keys

Comments

Known Hosts

Port Forwarding

Reverse Tunnel
-L
-R

Config and Host Aliases

~/.ssh/config

Host myhost1
    HostName 10.13.37.1
    Port 22
    User myuser

Host myhost2
    HostName 10.13.37.2
    Port 22
    User myuser
    LocalForward 3000 127.0.0.1:3000
    LocalForward 8083 127.0.0.1:8083
    LocalForward 8084 127.0.0.1:8084
    IdentityFile ~/.id_rsa

Host *
    ServerAliveInterval 30
    ServerAliveCountMax 2

SSHd

Disabling password authentication
/etc/ssh/sshd_config
sudo service sshd restart