Now, we're ready to use our SEGA Dreamcast as a router with firewalling for a LAN. But we've got some problems: The given nameservers have to be set up by hand as well as the configuration of every client in the LAN. To make our life easier, we alter the actual configuration and provide an own nameserver together with a DHCP server, that takes over the configuration of the connected clients. These steps are the theme of the next chapter.