Does having a dynamic or static IP address factor into network security anywhere? Is one more/less secure than another? If I use a computer with a linux distro on it, I still need a hub to allow access to multiple users - either cabled or wireless. Will this pc be dedicated - or mostly dedicated - for this purpose? I have a pentium d that sounds like it would easily do the trick but I would like to connect a 2 tb hard drive to it to back up data to, as well as my printers, etc