TRENDnet TW100-S4W1CA User Manual page 18

2-3-2 DHCP Client List
The DHCP client list allows you to see which clients are connected to the
Barricade via IP address, host name, and MAC address.
2-4 NAT
Network Address Translation (NAT) allows multiple users at the local site
to access the Internet through a single public IP address. NAT can also
prevent hacker attacks by mapping local addresses to public addresses for
key services such as the Web or FTP.
2-4-1 Special Application
Some applications require multiple connections, such as Internet gaming,
video conferencing, and Internet telephony. These applications cannot
work when Network Address Translation (NAT) is enabled. When users
send this type of request to your network via the Internet, the Router will
forward those requests to the appropriate PC. If you need to run
applications that require multiple connections, specify the port normally
associated with an application in the "Trigger Port" field, select the
protocol type as TCP or UDP, then enter the public ports associated with
the trigger port to open them for inbound traffic.
TCP (Transmission Control Protocol) - A method (protocol) used
along with the Internet Protocol (Internet Protocol) to send data in
the form of message units between computers over the Internet.
While IP takes care of handling the actual delivery of the data, TCP
takes care of keeping track of the individual units of data (called
packets) that a message is divided into for efficient routing through
the Internet.
UDP (User Datagram Protocol) - A communications method
(protocol) that offers a limited amount of service when messages
are exchanged between computers in a network that use the Internet
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Protocol (IP). UDP is an alternative to the TCP and, together with
IP, is sometimes referred to as UDP/IP. Like the Transmission
Control Protocol, UDP uses the Internet Protocol to actually get a
data unit (called a datagram) from one computer to another. Unlike
TCP, however, UDP does not provide the service of dividing a
message into packets (datagrams) and reassembling it at the other
end. Specifically, UDP doesn't provide sequencing of the packets
that the data arrives in. This means that the application program that
uses UDP must be able to make sure that the entire message has
arrived and is in the right order. Network applications that want to
save processing time because they have very small data units to
exchange (and therefore very little message reassembling to do)
may prefer UDP to TCP.
Example:
Trigger
ID Trigger Port
Type
1 28800 UDP 2300-2400, 47624
2 28800 UDP 2300-2400, 47624
3 6112 UDP
Public
Public Port Comment
Type
MSN Game
UDP
Zone
MSN Game
TCP
Zone
6112 UDP Battle.net
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