You dont need a server to connect computers; you need a way to forward/route packets. You can use a switch, router or basic computer to manage packets depending on what equipment you have a vailable. Once you have a way to route packets you need unique addresses for each of the machines you want to connect and routing rules to govern how the machines try to talk to each other.
L7Sqr
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For 10 computers, you need very little network equipment. All you need is a network switch. A 16 port switch will be adequate. If this network requires Internet access, you can plug the switch into an Internet router.
All of the computers on this network need to be running the same protocol, such as TCP/IP. If you have a consumer based router, it will include DHCP services thatwl configure the IP settings for your computers. If not, you will need to manually IP each host.
After about 10 PCs you should consider introducing a server and set up a domain to that you can centrally manage authentication and authorization services as well as other networking services.
JorgeM
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