Planet Technology ICA-210W - Manual (Page 94)

93
or 100Mbps per second over UTP, STP, or fiber-optic
media.
Firewall Firewall is considered the first line of defense in
protecting private information. For better security,
data can be encrypted. A system designed to prevent
unauthorized access to or from a private network.
Firewalls are frequently used to prevent unauthorized
Internet users from accessing private networks
connected to the Internet, especially Intranets all
messages entering or leaving the intranet pass through
the firewall, which examines each message and blocks
those that do not meet the specified security criteria.
G
Gateway A gateway links computers that use different data
formats together.
Group Groups consist of several user machines that have
similar characteristics such as being in the same
department.
H
HEX Short for hexadecimal refers to the base-16 number
system, which consists of 16 unique symbols: the
numbers 0 to 9 and the letters A to F. For example, the
decimal number 15 is represented as F in the
hexadecimal numbering system. The hexadecimal
system is useful because it can represent every byte (8
bits) as two consecutive hexadecimal digits. It is easier
for humans to read hexadecimal numbers than binary
numbers.