Sshconfig

The following is an example ~/.ssh/config file.

Host dev
    HostName dev.example.com
    Port 22000
    User attie
    IdentityFile ~/.ssh/attie@dev.example.com
    LocalForward 9906 127.0.0.1:3306
    ServerAliveInterval 300
    ServerAliveCountMax 2
    ProxyCommand ssh user@accessible.com nc %h %p