User manual

Cobalt CacheRaQ 4 User Manual 89
Domain name
The location of an organization or other entity on the Internet. For example,
the address www.cobalt.com locates an Internet address for the domain
name “cobalt.com” at a particular IP address and a particular host server
named “www.”
Domain Name System (DNS)
The Internet service responsible for translating a human-readable host name
such as cobalt.com into a numeric IP address (111.123.45.67) for TCP/IP
communications.
Dynamic Host Configuration Protocol (DHCP)
A protocol that provides a mechanism for allocating IP addresses
dynamically so that an address can be reused when a host no longer needs it.
Encryption
The transformation of data into a form unreadable by anyone without a
secret decryption key. Its purpose is to ensure privacy by keeping the
information hidden from anyone for whom it is not intended. In the area of
security, encryption is the ciphering of data by applying an algorithm to plain
text to convert it into cipher text.
See also Authentication and Secure Sockets Layer (SSL).
Ethernet
The most widely used technology for local area networks (LANs). Standard
ethernet runs at 10 Mb/s, 100 Mb/s or 1000 Mb/s. It balances speed, price,
ease of installation and availability.
File sharing
The public or private sharing of computer data or space in a network with
various levels of access privileges.
File Transfer Protocol (FTP)
A standard Internet protocol and a way to exchange files between computers
connected to the Internet. FTP is an application protocol that uses TCP/IP
protocols. FTP is commonly used to transfer Web page files from the
computer that was used to create the files to the computer that acts as the
server for these files. It is also used to download programs and other files to
your computer from other servers.
Using FTP, you can update — delete, rename, move and copy — files at a
server. You need to log on to an FTP server. However, publicly available files
are easily accessed using anonymous FTP.