Bedienungsanleitung Tenda FH304 (Seite 50 von 60) (Englisch)

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Wireless N300 Advanced Router

Appendix 1 Glossary

Channel

A communication channel, also known as channel, refers either to a physical transmission medium such as a wire

or to a logical connection over a multiplexed medium such as a radio channel. It is used to transfer an information

signal, such as a digital bit stream, from one or more transmitters to one or more receivers. If there is only one AP

in the range, select any channel you like. The default is Auto.

If there are several APs coexisting in the same area, it is advisable that you select a different channel for each AP

to operate on, minimizing the interference between neighboring APs. For example, if 3 American- standard APs

coexist in one area, you can set their channels respectively to 1, 6 and 11 to avoid mutual interference.

SSID

Service set identifier (SSID) is used to identify a particular 802.11 wireless LAN. It is the name of a specific

wireless network. To let your wireless network adapter roam among different APs, you must set all APs’ SSID to

the same name.

WPA/WPA2

The WPA protocol implements the majority of the IEEE 802.11i standard. It enhances data encryption through the

Temporal Key Integrity Protocol (TKIP) which is a 128-bit per-packet key, meaning that it dynamically generates a

new key for each packet. WPA also includes a message integrity check feature to prevent data packets from being

hampered with. Only authorized network users can access the wireless network. The later WPA2 protocol

features compliance with the full IEEE 802.11i standard and uses Advanced Encryption Standard (AES) in

addition to TKIP encryption protocol to guarantee better security than that provided by WEP or WPA. Currently,

WPA is supported by Windows XP SP1.

IEEE 802.1X Authentication

IEEE 802.1X Authentication is an IEEE Standard for port-based Network Access Control (PNAC). It is part of the

IEEE 802.1 group of networking protocols. It provides an authentication mechanism to devices wishing to attach

to a LAN or WLAN.IEEE 802.1X defines the encapsulation of EAP over LAN or EAPOL. 802.1X authentication

involves three parties: a supplicant, an authenticator, and an authentication server. The supplicant is a client

device (such as a laptop) that wishes to attach to the LAN/WLAN - though the term 'supplicant' is also used

interchangeably to refer to the software running on the client that provides credentials to the authenticator. The

authenticator is a network device, such as an Ethernet switch or wireless access point; and the authentication

server is typically a host running software supporting the RADIUS and EAP protocols. The authenticator acts like

a security guard to a protected network. The supplicant (i.e. client device) is not allowed access through the

authenticator to the protected side of the network until the supplicant’s identity has been validated and authorized.

With 802.1X port-based authentication, the supplicant provides credentials, such as user name / password or

digital certificate, to the authenticator, and the authenticator forwards the credentials to the authentication server

for verification. If the authentication server determines the credentials are valid, the supplicant (client device) is

allowed to access resources located on the protected side of the network.

PPPOE

The Point-to-Point Protocol over Ethernet (PPPoE) is a network protocol for encapsulating PPP frames inside

Ethernet frames. Integrated PPP protocol implements authentication, encryption, and compression functions that

traditional Ethernet cannot provide and can also be used in the cable modem and digital subscriber line (DSL) and

Ethernet that provide access service to the users. Essentially, it is a protocol that allows to establish a

point-to-point tunnel between two Ethernet interfaces within an Ethernet broadcast domain.

DNS

The Domain Name System (DNS) is a hierarchical distributed naming system for computers, services, or any

resource connected to the Internet or a private network. It associates various information with domain names

assigned to each of the participating entities. A Domain Name Service resolves queries for these names into IP

addresses for the purpose of locating computer services and devices worldwide. An often-used analogy to explain

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