User's Manual

114
Subnet Mask: A subnet mask, which may be a part of the TCP/IP information provided
by your ISP, is a set of four numbers (e.g. 255.255.255.0) configured like an IP address.
It is used to create IP address numbers used only within a particular network (as opposed
to valid IP address numbers recognized by the Internet, which must be assigned by
InterNIC).
TCP/IP, UDP: Transmission Control Protocol/Internet Protocol (TCP/IP) and Unreliable
Datagram Protocol (UDP). TCP/IP is the standard protocol for data transmission over the
Internet. Both TCP and UDP are transport layer protocol. TCP performs proper error
detection and error recovery, and thus is reliable. UDP on the other hand is not reliable.
They both run on top of the IP (Internet Protocol), a network layer protocol.
WAN: Wide Area Network. A network that connects computers located in geographically
separate areas (e.g. different buildings, cities, countries). The Internet is a wide area
network.
Web-based management Graphical User Interface (GUI): Many devices support a
graphical user interface that is based on the web browser. This means the user can use the
familiar Netscape or Microsoft Internet Explorer to Control/configure or monitor the
device being managed.