Compaq iPAQ Connection Point CP-1, Руководство пользователя

Страница: 46 / 50

G
LOSSARY
-8
I
P
AQ
C
ONNECTION
P
OINT
U
SER
G
UIDE
SPI (Stateful Packet Inspection)
Refers to a firewall’s ability to examine IP
packet headers to determine origination/
destination addresses by using
predetermined rule sets to allow or deny
access to the packets. This is a security
feature commonly found in firewalls.
surf
To jump from place to place within or
between sites on the Internet, searching for
topics of interest by clicking hyperlinks.
See
hyperlink and navigate .
symmetric Data transmission that is the
same speed both downstream and
upstream.
T
TCP/IP (transmission control protocol/
Internet protocol)
A set of networking
protocols that allows two or more
computers to communicate. TCP/IP was
developed by the Department of Defense
for the Defense Data Network and has
since been widely adopted as a networking
standard.
U
uplink port
A port available on some
hubs or routers that is set aside for
connecting to other hubs, routers, or cable
or DSL modems.
upstream
The traffic on a network which
goes from the endpoint (your computer) to
the provider. Sending an e-mail message is
upstream traffic. See
downstream .
URL (Uniform Resource Locator)
The address your browser uses to locate a
specific site on the World Wide Web, such
as
http://www.compaq.com
UTP (Unshielded Twisted Pair) cable
Used for creating Ethernet networks. See
Category 5 cable .
V
V.90 modem
The official ITU
international standard for 56K analog
modems. This is the standard most
commonly used to connect through the
telephone system. Although data can travel
at speeds up to 56 kbps from the ISP to
your home, the standard currently limits
the speed that data can be sent from your
home back to the ISP to 31.2 kbps.
VPN (Virtual Private Networking)
A system and method that enables remote
users to access a private network through a
public network. The remote user appears to
be connected directly to the private
network.