Our research group is involved in a continuous monitoring of a structure and we have a data acquisition system (DAQ) and a laptop deployed on site. DAQ is connected to the laptop with an ethernet cable (There is no other way). After I receive the raw data from DAQ, I do a little processing in the laptop. Afterwards, I need to transfer the processed data to a ftp server. There is a server rack in the same corridor and we need another Ethernet connection between this laptop and the rack.
My question is the following: Our laptop has only one ethernet port, how can I connect my DAQ to the laptop and the laptop to the server rack with one only ethernet port? What is the most cost-effective way?
One additional comment: The distance between my laptop and the server rack is around 130 meters. I've read that this might require an amplifier to boost the signal. Is this true?