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Appendix G: Glossary
10/100 16-Port VPN Router
SMTP (Simple Mail Transfer Protocol) - The standard e-mail protocol on the Internet.
SNMP (Simple Network Management Protocol) - A widely used network monitoring and control protocol.
Software - Instructions for the computer. A series of instructions that performs a particular task is called a
“program”.
Spread Spectrum - Wideband radio frequency technique used for more reliable and secure data transmission.
SSID (Service Set IDentifier) - Your wireless network's name.
SPI (Stateful Packet Inspection) Firewall - A technology that inspects every incoming packet of information
before allowing it to enter the network.
Static IP Address - A fixed address assigned to a computer or device that is connected to a network.
Static Routing - Forwarding data in a network via a fixed path.
Subnet Mask - An address code that determines the size of the network.
Switch - 1. Device that is the central point of connection for computers and other devices in a network, so data
can be shared at full transmission speeds. 2. A device for making, breaking, or changing the connections in an
electrical circuit.
TCP/IP (Transmission Control Protocol/Internet Protocol) - A network protocol for transmitting data that requires
acknowledgement from the recipient of data sent.
Telnet - A user command and TCP/IP protocol used for accessing remote PCs.
TFTP (Trivial File Transfer Protocol) - A version of the TCP/IP FTP protocol that uses UDP and has no directory or
password capability.
Throughput - The amount of data moved successfully from one node to another in a given time period.
Topology - The physical layout of a network.
TX Rate - Transmission Rate.
UDP (User Datagram Protocol) - A network protocol for transmitting data that does not require acknowledgement
from the recipient of the data that is sent.
Upgrade - To replace existing software or firmware with a newer version.