I can ssh into a mysql server via an intermediate host from home:
Peter@home -> Ubuntu a.b.com -> MySQL on Ubuntu: x.y.org by:
ssh -t [email protected] ssh [email protected] as x.y.org only allow ssh from a fixed a.b.com ip address, and mysql port 3306 only accessible from x.y.org's 127.0.0.1/localhost.
How can I connect to x.y.org:3306 through these two ssh tunnels?