"The access point (AP) comes with five switched Fast Ethernet ports and no less than four of them can be used to provide simultaneous Internet access. You can add four ADSL or cable modems, enter their respective ISP login details and the AP will perform load balancing across all WAN ports in use. If any fail then all traffic will be switched to the active WAN links. Standard hacker protection is provided by NAT and an SPI firewall to which you can add custom packet filtering rules and apply them to specific ports. You can also stop wireless traffic from being passed to the LAN ports allowing you to isolate wireless users and restrict them to accessing only the WAN port."