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I have a switch connecting several computers with my ISP.
All the computers gets external IPs from my ISP. When tracing the route between two of the computers the traffic always passes through my ISP before returning to the correct computer (which reduces the transfer speeds between computers to my internet connections speed).
I was under the impression that the switch should route traffic directly to the correct computer.
What am I missing, and how can I accomplish this?
I also have a router/AP that can be used, but it doesn't have DMZ.
Uhm. Assuming all PCs of the OP have a IP in the same subnet then they can talk dirextly with eachother and a switch should do so once it learns the relevant ARP addresses. The OP could easy take any cheap SOHO switch and gain that functionality. – Hennes – 2015-12-10T19:09:52.923