Firewall issue - a solution is needed!

Starting with 1 server, it was enough to setup a firewall on that server. It was also OK to set it up the protection on the second server... Now, the fourth server is on its way. They are all and will be Windows servers.

We dont want a firewall on each server any longer. I have heard that its possible to setup a *nix box to work like a firewall. Then all data go through that server first and gets sorted. Is this possible and how?

How do you do it?

Thanks a lot!

 

 

 

 

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