Is it possible to emulate a usb drive from a ethernet port?

My TV records and reads from USB drives. Is there a way to connect/adapt a connection from the USB to an RJ-45?

TV USB <----- (adaptor) -----> RJ-45 ethernet (/mnt/fake_usb)

Is it possible in Linux?

Do you mean something like this:
http://www.ugreen.com.cn/product-732-en.html ?

No.. this is an usb ethernet adapter.. it just make the usb into an ethernet.

They do make usb over ethernet devices but I've never used them. Think they are rather pricey too. Not exactly sure how they present the device to the host.

http://www.bb-elec.com/Products/USB-...-Ethernet.aspx and others.

Typically they are not linux compatible. Software is required to create a virtual device but basically it is like a USB extender which is backwards to how the OP wants operate.

I don't know if such a device exists but it is possible to build one... Writing the program would be the hard part.

You would probably need an sbc on the other side of for the USB handling. I seem to recall a recent project to do usb over the network, but it still requires a computer (sbc / raspberry pi) to plug the USB into. USB over IP or usb over ip tunnel seems to be the proper terminology for it.

Specifically the SBC would need to have a device or OTG port. The SBC would need to emulate a flash drive and be able to connect to a computer on the network.

Most of the software/devices of the nature I have seen the computer is still the host that connects to the remote USB device.

I know you can extend it. https://www.amazon.com/Tripp-Lite-Ex.../dp/B003WO40V6

I have actually used a similar device for both USB and VGA with a 7" VGA touch monitor. Worked well enough for my application.

However, you could not directly connect the TV to a computer using USB since both devices are host controllers.

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That device is "USB over Cat5/Cat6", not "USB over ethernet". Ethernet is a protocol which can be carried over various physical media. Cat5 and Cat6 are types of cable which which can be use for various purposes, not necessarily involving ethernet at all.

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Behold:
https://www.eltima.com/usb-over-netw...laQhoCSMHw_wcB
http://www.usb-over-network.com/usbn...ns/remote.html

I have used a network-to-serial device with Linux before. Old system we worked on *HAD TO* have serial terminals (??) because of the opinions of one guy, who apparently thought that people would get 'confused' if we used something like PuTTY or Reflections. Serial terminals went to this little box, which plugged into network. Driver got loaded at Linux boot-time, and these serial ports would present themselves to the system as just another TTY. Worked great, actually, but totally unnecessary.

Thank you for the links.

No worries...but honestly unsure as to how much help it'll provide. The abstraction layers are going to provide....'interesting' speed and results, if you ask me. And I can't think of a USB device that wasn't really designed to be:

• Cheap enough to buy multiples of
• Portable enough to tote around

Sharing something like a NAS? Why bother with this, when you can probably mount it via NFS, SSHFS, or CIFS directly. Or share it through a host machine, at the very least. Can't think of ANY device you'd need this for, honestly.

Even if it was a 3D printer....just remote-desktop into the machine via VNC/RDP, and use it locally. Much easier than doing USB-over-CAT5

It will not help in this case. There might be better alternatives if the OP posted what they were trying to accomplish.

So far no one has solved the problem.

To be clear.

"not necessarily involving ethernet at all."

I have no idea what is in their mind or if they need tcp/ip support or routeable.

"
RJ45

An 8-pin/8-position plug or jack is commonly used to connect computers onto Ethernet-based local area networks (LAN).
Two wiring schemes–T568A and T568B–are used to terminate the twisted-pair cable onto the connector interface.