I have a certain device that I communicate with using a wired IP over Ethernet interface. I have no access to the device's operating system or source code. What I'd like to do is to be able to communicate with it using WiFi, taking into account that I can't install any device drivers on my device (for example, to support a USB WiFi dongle).
What I am looking for is a device that plugs in to my device's Ethernet port and serves as a WiFi hotspot for my other devices to connect to, enabling standard IP traffic to flow between my device and a computer or a smartphone.
I'll be happy for any information on this :)
Nope. Doesn't work like that if you cannot configure the network interface. It is that simple. No device will do what you are asking, without configuring the network device, and firewalls, which you have already stated you have no access to (school PC, am I right?)