wall mount network cabinet + 24 port cat 6 patch panel - run all cables into cabinet from above, make sure you label the patch panel. Then toss in a switch and any other necessary gear and your set. .
https://www.amazon.com/Tripp-Lite-Rackmount-Feedthrough-N254-024/dp/B015L6PRBY?th=1
StarTech makes very similar ones as well.
https://www.amazon.com/gp/product/B0721XSYZJ/ref=oh_aui_search_detailpage?ie=UTF8&psc=1