The newest versions of the FL mGuard combine secure routing, VPN and firewall functions with network switch capabilities. The RS4004 integrates a four-port managed switch, enabling a flexible option for multiport security applications in Ethernet networks. It provides port mirroring, multicast filtering and querier and VLAN support, and its “demilitarized zone” port is a protected network located between two other networks. Both the secure LAN side and the unsecured WAN side of the network can access this port. The RS2005 integrates a five-port unmanaged Ethernet switch, with automatic detection of data-transmission speed of 10 or 100 Mbps (RJ45) and auto-crossing function.