FRITZ!WLAN Repeater N/G 46
Glossary
IP Addressing Addressing is one of the main functions of the Internet
Protocol (IP). Internet addresses can be written in deci-
mal, octal or hexadecimal notation. The
FRITZ!WLAN Repeater uses “dotted-decimal” notation:
The four bytes of an address are represented by decimal
numbers separated by dots. The total volume of Internet
addresses, the address space, is separated into classes
(A, B, C, D, and E). The full set of IP addresses, called the
address space, is grouped into address classes designat-
ed as A, B, C, D and E. Only the first three of these five ad-
dress classes are actually used. These classes can be de-
scribed as follows:
Properties of IP Address Classes
Every IP address consists of two parts: the network ad-
dress and the host address. The sizes of the network ad-
dress and the host address are variable, and determined
by the first four bits (of the first byte) of the IP address.
IP
Masquerading
By means of IP masquerading a computer or LAN can be
protected from unauthorized connection request from the
Internet. Masquerading works by converting the IP ad-
dresses used in a network to one public IP address. From
the outside it appears that all requests are sent from a sin-
gle computer.
IP Network A network in which data exchange takes place on the ba-
sis of the Internet Protocol is called an IP network.
Classes Properties Network address
Decimal value
Class A ad-
dress
Few networks, many hubs 0-127
Class B ad-
dress
Intermediate distribution of
networks and hubs
128-191
Class C ad-
dress
Many networks, few hubs 192-223
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