I am looking to setup a new in-home server using an old laptop.
It will have an external USB drive, which will be a NAS. I will also have a Plex server and the usual LAMP.
Due to the slow 100Mbps ethernet adapter, I want to add a Gigabit "Ethernet to USB adapter". I want to setup the Plex server to use the built in ethernet port, and the NAS and Webserver to use the Gigabit ethernet to usb adapter. As I should be able to get a few more MBs file transfer out of the USB port.
I can't see why this wouldn't be possible. What do you call it when you use more than one ethernet adapter and use different ones from different software?
What you want to do is to bind a service to a specific network interface, ie to a specific ip adress.
It is binding a service to a listening ip address or interface.
There is probably no specific HowTo about doing this, but it is just a part of the configuration process for each of the services you plan to deploy.