SSH port forwarding commands; useful for forwarding a remote database connection over SSH in combination with other configurations like a jump host (bastion)

ssh_port_forwarding

# Overview on SSH port forwarding: http://blog.trackets.com/2014/05/17/ssh-tunnel-local-and-remote-port-forwarding-explained-with-examples.html

# Example of MySQL database connection tunnel using a jump host
ssh -F ./ssh.cfg -nNT -L 33060:localhost:3306 remotehost

# ./.ssh.cfg contents

Host bastion
  Hostname 8.8.8.8
  User bastion-user

Host 10.0.1.*
  User internal-host-user
  ProxyJump bastion