The DHCP server 310 and the DHCP client 320 can be essentially computer programs or other firmware or software that implement Dynamic Host Configuration Protocol (DHCP) defined in Internet RFC-2131 and RFC-2132, which are incorporated herein by reference in their entireties. [0027] Functionally, the DHCP server 310 provides the PCs 110 with IP addresses that are available on the LAN side, isolated