Hi all, I am the first to admit I'm not a expert of networking infrastructure. With us acquiring another building in the next few months I have been tasked with setting up a new network - with some special requirements. I'm not sure what equipment I need or what the best practices for this situation are, so please pitch in what you can!
Three tenants will occupy this additional building. All three are companies that my boss owns. Anyway, he has specified that we will have one internet connection (Time Warner Business Class cable) coming into the building. Obviously they need to share this connection, however, the companies are totally separate entities and therefore their internal networks need to be separate.
Each company should have its own public IP address so that there is no association between them. As far as I know none of the tenants need access to any other tenant's internal network, though we will be installing a PBX on site that will also be shared.
My boss, who is not an IT guy, suggested a router for each company but I'm not sure this is the best way mainly because it adds to the difficulty of managing each one. Then again, perhaps dedicated hardware is necessary to ensure the separation between each tenant? I am also uncertain as to how to achieve the routing necessary if the PBX is attached directly to Time Warner's device and this makes me uncomfortable anyway with no firewall.
It only makes this more difficult that we pretty much have a $0 budget. I'm guessing that pfsense or something can meet this requirements but I have never used it. Perhaps dd-wrt can be helpful?
What are your thoughts?