Sony DH280 Manual De Usuario

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Glossary
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Primary DNS server
One of the DNS servers that can first reply to a request 
by connected devices or other DNS servers.
Proxy server
A server or software that acts as an intermediary 
between a local network and the Internet so that it can 
connect to the Internet in place of a computer on a local 
network.
PSK
Abbreviation for Pre-Shared Key. This is a shared key to 
make an encryption key, used with TKIP in WPA 
encryption standard. PSK sometimes means an 
authentication system using a key previously shared.
QoS
Enter a value in the DSCP (Differential Service Code 
Point) field included in the IP header to control 
communication service quality.
RADIUS client
RADIUS (Remote Authentication Dial-in User Service) 
is an authentication and accounting protocol managing 
network access, and a RADIUS client is a party that 
accesses the network.
In Internet connecting service, a Network Access Server 
(NAS) such as that for dial-up and broadband access 
server is a RADIUS client. In a wireless LAN system, a 
wireless LAN access point is a RADIUS client.
Saturation
The degree to which a color is pure.
Secondary DNS Server
Subsidiary DNS server used when a primary DNS server 
cannot be used.
Shared secret
A character string to be used for mutual authentication 
between a RADIUS server and RADIUS client.
Sharpness
The degree to which the boundary of two portions is 
clearly distinguished.
SMTP server
A server for sending or relaying e-mail messages 
between servers.
SNMP
A protocol for monitoring and managing network 
devices.
SSL
Acronym for Secure Sockets Layer. This is a protocol 
developed by Netscape Communications Corporation to 
be used for communications of encrypted data on the 
Internet.
Subnet mask
32-bit stream used to distinguish the subnet address 
from an IP address.
TCP
Acronym for Transmission Control Protocol. A standard 
protocol used for Internet connection. Compared with 
the other protocol, UDP, TCP provides reliable 
communication but communication speed is slower.
TKIP
Acronym for Temporal Key Integrity Protocol. This is 
used in WPA encryption for a wireless LAN. TKIP 
provides high security since it changes encryption keys 
based on PSK during on-going communication.
UDP
Acronym for User Datagram Protocol. A standard 
protocol used for Internet connection. Compared with 
the other protocol, TCP, UDP can transmit data faster, 
but reliable communication is not guaranteed. 
Unicast
Transmission of data to specified equipment on a 
network by specifying a single address.
WPA
Acronym for Wi-Fi Protected Access. This is an 
encryption standard for a wireless LAN. It provides 
higher security than the conventional WEP (Wired 
Equivalent Privacy) standard. In WPA, TKIP is used for 
the encryption method, and PSK and EAP are used for 
the authentication protocol.
WPA2
Abbreviation for Wi-Fi Protected Access 2. WPA2 is a 
standard with which AES (Advanced Encryption 
Standard) is added to WPA. 
802.1X
A standard that performs user authentication and 
dynamic key generation and traffic on a LAN.