March - NETGEAR ProSafe FVS124G Reference Manual

Reference Manual for the ProSafe VPN Firewall 25 with 4 Gigabit LAN and Dual WAN Ports
A
Access Control List (ACL)
An ACL is a database that an Operating System uses to track each user's access rights to system objects
(such as file directories and/or files).
Ad-hoc Mode
An 802.11 networking framework in which devices or stations communicate directly with each other,
without the use of an access point (AP). Ad-hoc mode is also referred to as peer-to-peer mode or an
Independent Basic Service Set (IBSS). Ad-hoc mode is useful for establishing a network where wireless
infrastructure does not exist or where services are not required.
ADSL
Short for asymmetric digital subscriber line, a technology that allows data to be sent over existing copper
telephone lines at data rates of from 1.5 to 9 Mbps when receiving data (known as the downstream rate) and
from 16 to 640 Kbps when sending data (known as the upstream rate). ADSL requires a special ADSL
modem. ADSL is growing in popularity as more areas around the world gain access.
ARP
Address Resolution Protocol, a TCP/IP protocol used to convert an IP address into a physical address (called
a DLC address), such as an Ethernet address. A host wishing to obtain a physical address broadcasts an ARP
request onto the TCP/IP network. The host on the network that has the IP address in the request then replies
with its physical hardware address. There is also Reverse ARP (RARP) which can be used by a host to
discover its IP address. In this case, the host broadcasts its physical address and a RARP server replies with
the host's IP address.
Auto Uplink
Auto Uplink technology (also called MDI/MDIX) eliminates the need to worry about crossover vs.
TM
straight-through Ethernet cables. Auto Uplink TM will accommodate either type of cable to make the right
connection.
B
Bandwidth
The information capacity, measured in bits per second, that a channel could transmit. Bandwidth examples
include 10 Mbps for Ethernet, 100 Mbps for Fast Ethernet, and 1000 Mbps (I Gbps) for Gigabit Ethernet.
Baud
The signaling rate of a line, that is, the number of transitions (voltage or frequency changes) made per
second. Also known as line speed.
-2 Glossary

202-10085-01, March 2005