Bit of a strange one and I need some advice about how best to achieve this.
What I have currently is a SBS server with a netgear unmanaged switch and netgear adsl router and 10 client workstations. This is all fine but recently the owner of the business has rented out one of their rooms to another business and allowed them to connect their computers to the existing network. This means they are getting dhcp from the server and using the internet connection.
What I want to do is separate the computers in that room from the main network but still allow them to share the internet connection.
At first I thought of just purchasing a 2nd switch and patching their computers into that only and connecting one of the network ports of the adsl router to their network also. The problem with this is they dont have a server to do dhcp or routing etc.
The other thing I thought of was replacing the existing switch with a smart switch capable of doing vlans but I dont have any experience setting up vlans so a bit unsure about that.
Anybody got any ideas of how best to achieve this?