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Open source router firmware project OpenWrt ships its own entirely repairable hardware
(www.theregister.com)
This is a most excellent place for technology news and articles.
Local NAS, local security cameras, in-house streaming, LAN multiplayer, local torrent-like data sharing (FYI, Windows Update and more uses the local network to share update between computers by default, so it gets downloaded once and then shared internally)
Then use a switch ..