The PLANET ADSL 2/2+ 4-Port Router, ADE-4400, provides office and residential users the ideal solution for sharing the high-speed ADSL 2/2+ broadband Internet connection on four Ethernet ports. It can support downstream transmission rates up to 24Mbps and upstream transmission rates up to 3.5Mbps. The product supports PPPoA (RFC 2364 - PPP over ATM Adaptation Layer 5), PPP over Ethernet (RFC 2516), and RFC 1483 encapsulation over ATM (MER, bridged or routed) to establish a connection with ISP. Via the user-friendly management interface, the ADE-4400 can be managed by workstations used standard web browsers. Furthermore, the ADE-4400 provides DHCP server, NAT, Virtual Server, DMZ, access control, IP filter, VPN Pass-Through, and UPnP capability. The ADE-4400 also serves as an Internet firewall, protecting your network from being accessed by outside users. It provides the natural firewall function (Network Address Translation, NAT) and all incoming and outgoing IPs are monitored and filtered by this product as well. In addition, it can be configured to block internal users who are accessing to the Internet.