TRENDnet TV-IP422, User Manual, Page: 100 / 111

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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.
I
Intranet This is a private network, inside an organization or company
that uses the same software you will find on the public
Internet. The only difference is that an Intranet is used for
internal usage only.
Internet The Internet is a globally linked system of computers that are
logically connected based on the Internet Protocol (IP). The
Internet provides different ways to access private and public
information worldwide.