Well there are different opinions regarding what services should one shut down. Personaly, I this that's up to administrator to decide, as what purpose your server will serve. Anyway you can search bit on the Internet regarding some common services that you can shut down. As per IP, you can't really use single IP on 2 different NIC (neither on the same computer nor same subnet), but you can use 2 different subnets i.e. 172.16.1.x and 172.16.2.x As per hub, well your hub is 10/100 and NICs are 100/1000 so there is a 100 Mbps that matches even though if I was you I would use switch, today switches are not expensive, but you will gain more from the switch than from the hub. As per router, I don't think that router processor will affect performance of your connection at any time, unless you find yourself under some DoS attacks ...