Bedienungsanleitung Netgear WGR614 v5 (Seite 166 von 172) (Englisch)

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Reference Manual for the 54 Mbps Wireless Router WGR614 v5

8 Glossary

June 2004 202-10036-01

SSID

A Service Set Identification is a thirty-two character (maximum) alphanumeric key identifying a wireless

local area network. For the wireless devices in a network to communicate with each other, all devices must

be configured with the same SSID.

This is typically the configuration parameter for a wireless PC card. It corresponds to the ESSID in the

wireless Access Point and to the wireless network name.

See also Wireless Network Name and ESSID.

Subnet Mask

A mask used to determine what subnet an IP address belongs to. Subnetting enables a network administrator

to further divide an IP address into two or more subnets.

An IP address has two components, the network address and the host address. For example, consider the IP

address 150.215.017.009. Assuming this is part of a Class B network, the first two numbers (150.215)

represent the Class B network address, and the second two numbers (017.009) identify a particular host on

this network.

Subnetting enables the network administrator to further divide the host part of the address into two or more

subnets. In this case, a part of the host address is reserved to identify the particular subnet. This is easier to

see if we show the IP address in binary format. The full address is: 10010110.11010111.00010001.00001001

The Class B network part is: 10010110.11010111

and the host address is 00010001.00001001

If this network is divided into 14 subnets, however, then the first 4 bits of the host address (0001) are

reserved for identifying the subnet.

The subnet mask is the network address plus the bits reserved for identifying the subnetwork. (By

convention, the bits for the network address are all set to 1, though it would also work if the bits were set

exactly as in the network address.) In this case, therefore, the subnet mask would be

11111111.11111111.11110000.00000000. It's called a mask because it can be used to identify the subnet to

which an IP address belongs by performing a bitwise AND operation on the mask and the IP address. The

result is the subnetwork address: Subnet Mask 255.255.240.000 11111111.11111111.11110000.00000000

IP Address 150.215.017.009 10010110.11010111.00010001.00001001

Subnet Address 150.215.016.000 10010110.11010111.00010000.00000000

The subnet address, therefore, is 150.215.016.000.

TCP/IP

The main internetworking protocols used in the Internet. The Internet Protocol (IP) used in conjunction with

the Transfer Control Protocol (TCP) form TCP/IP.

TLS

Short for Transport Layer Security, TLS is a protocol that guarantees privacy and data integrity between

client/server applications communicating over the Internet.

The TLS protocol is made up of two layers. The TLS Record Protocol ensures that a connection is private by

using symmetric data encryption and ensures that the connection is reliable. The second TLS layer is the

TLS Handshake Protocol, which allows authentication between the server and client and the negotiation of

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