Background: My home broadband speed is very slow, so I use my mobile hotspot (5G, unlimited data) to download large files. Currently, to store media on my NAS I download the file to my phone, then transfer to my NAS via USB.
I want to move to directly connecting my NAS to the media server via FTP and download files that way, but I need the NAS to use my mobile data hotspot whilst also staying on my home ethernet for access from local devices like my main desktop. When I tether my phone to my NAS, I see "usb0" in the list of network interfaces.
My question is, how do I force the ftp application to connect to the media server via the usb0 interface? I've seen threads like:
But when I follow this example, I don't get any connection with e.g. curl returning "Could not resolve host". I've got fairly basic level knowledge in UNIX. My local network is enp3s0 at 192.168.4.X.
61 Answer
Here it is a more detailed answer.
On any unix/linux machine you setup every interface with at least 3 parameters:
IP, Default Gateway/Route and Netmask
IP: is the actual direction for your inteface
Gateway: is the primary contact to reach other networks
Netmask: Would be a definition of what actually is your local network
then there is the DNS that it is only needed when you want to resolve out of the network host/IPs. If you configure names in the /etc/hosts then you know the translation between the name and the local IPs.
Now. if you have more than one way to reach the network you could use something like:
ROUTE add [destination] [MASK netmask] [gateway] [METRIC metric] [IF interface]
here you tell the server to use [gateway] to reach [destination] on a specific [IF interface]
using this you bind the routes by IP/Interface and it is not related to the program you are using.
Please, go ahead and google the specifics and try it.
Good luck.
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