Im not all that familar with the jugs pinout to be honest, id assume its probably the same, however i used this...
Its the same exact pinout for encrypting CDs with the jaglink via Matthias Domin's method.
All you really need is the TX (Transfer), RX (Receive), and GND (Ground) pins. the rest you can cut and tape up so they dont short out for any reason or just tape and tuck into the connector behind the DB9 when you assemble it.
ALSO, you'll need power supplies for those Serial to Ethernet converters. I believe they are 5V 1Amp if im not mistaken. Whenever you get it all setup, id be willing to give it a shot and attempt connection over the internet on doom but, not sure how well it will Fair. Aircars might be a better try.