I've got the ipv4, at least I think I did. That's what I did:
http://tinypic.com/v...pic=2d7ev5y&s=6
I tested the ports in these sites: https://www.grc.com/x/portprobe=25565 http://www.yougetsig...ols/open-ports/ and got closed.
I don't know if I need to open the modem's firewall or what.