Tenda F303 Manual page 77

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
T
he 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 the Domain Name System is that it
serves as the phone book for the Internet by translating human-
friendly computer hostnames into IP addresses.