We've recently went from a 1 location office to now having 3 and all of the networks are tied into each other. Each location is on a separate internal subnet that goes out through it's own firewall and connects to the main office. We have a couple of employees that are sometimes working at these other locations and the only way they can get connected to the network is to change their IP to the subnet of that office. Is it possible, since all 3 networks can talk to each other, that they can be at any office and dock their laptop and begin working without having to change their IP? We don't use DHCP so maybe that's part of the problem?