Belkin ADSL2+ Modem with Wireless G Router F5D7632uk4A - Manual (Page 6)

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Introduction
Built-In Dynamic Host Configuration Protocol (DHCP)
Built-In Dynamic Host Configuration Protocol (DHCP) on-board makes for
the easiest possible connection of a network. The DHCP server will assign IP
addresses to each computer automatically so there is no need for a complicated
networking setup.
NAT IP Address Sharing
Your Router employs Network Address Translation (NAT) to share the single IP
address assigned to you by your Internet Service Provider while saving the cost of
adding additional IP addresses to your Internet service account.
SPI Firewall
Your Router is equipped with a firewall that will protect your network from a wide
array of common hacker attacks including IP Spoofing, Land Attack, Ping of Death
(PoD), Denial of Service (DoS), IP with zero length, Smurf Attack, TCP Null Scan,
SYN flood, UDP flooding, Tear Drop Attack, ICMP defect, RIP defect, and fragment
flooding.
MAC Address Filtering
For added security, you can set up a list of MAC addresses (unique client
identifiers) that are allowed access to your network. Every computer has its own
MAC address. Simply enter these MAC addresses into a list using the web-based
user interface and you can control access to your network.
Universal Plug-and-Play (UPnP) Compatibility
UPnP (Universal Plug-and-Play) is a technology that offers seamless operation of
voice messaging, video messaging, games, and other applications that are UPnP-
compliant.
Support for VPN Pass-Through
If you connect to your office network from home using a VPN connection, your
Router will allow your VPN-equipped computer to pass through the Router and to
your office network.