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Garmin HN294DP/DI User Manual

Page 102

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Important Information

96

EN/LZT 108 6377 R4 - September 2003

device will not be permitted to join the BSS unless it can provide the unique
SSID. Because an SSID can be sniffed in plain text from a packet it does
not supply any security to the network.
An SSID is also referred to as a Network Name because essentially it is a
name that identifies a wireless network

Stateful Inspection
Stateful inspection is a firewall architecture that works at the network layer.
Unlike static packet filtering, which examines a packet based on the
information in its header, stateful inspection tracks each connection
traversing all interfaces of the firewall and makes sure they are valid. An
example of a stateful firewall may examine not just the header information
but also the contents of the packet up through the application layer in order
to determine more about the packet than just information about its source
and destination. A stateful inspection firewall also monitors the state of the
connection and compiles the information in a state table. Because of this,
filtering decisions are based not only on administrator-defined rules (as in
static packet filtering) but also on context that has been established by prior
packets that have passed through the firewall. As an added security
measure against port scanning, stateful inspection firewalls close off ports
until connection to the specific port is requested.

- T -

T1.413
The American National Standards Institute (ANSI) standard for asymmetric
digital subscriber line using discrete multitone modulation, which the G.dmt
standard is based on.

TCP
Abbreviation of Transmission Control Protocol, and pronounced as
separate letters. TCP is one of the main protocols in TCP/IP networks.
Whereas the IP protocol deals only with packets, TCP enables two hosts to
establish a connection and exchange streams of data. TCP guarantees
delivery of data and also guarantees that packets will be delivered in the
same order in which they were sent.

TCP/IP
Short for Transmission Control Protocol / Internet Protocol, the suite of
communication protocols used to connect hosts on the Internet.

Telnet
A terminal emulation program for TCP/IP networks such as the Internet.
The Telnet program runs on your computer and connects your PC to a
server on the network. You can then enter commands through the Telnet
program and they will be executed as if you were entering them directly on
the server console.