Corinex Global ADSL2+ - Manual (Page 130)

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Appendices
Corinex ADSL2+ Wireless Gateway G
Dynamic IP Address - IP address that is automatically assigned to a client station
in a TCP/IP network, typically by a DHCP server. Network devices that serve mul-
tiple users, such as servers and printers, are usually assigned static IP addresses.
Dynamic Routing - The ability for a router to forward data via a different route
based on the current conditions of the communications circuits. For example, it
can adjust for overloaded traffic or failing lines and is much more flexible than static
routing, which uses a fixed forwarding path.
Encapsulation - The wrapping of data in a particular protocol header. For example,
Ethernet data is wrapped in a specific Ethernet header before network transit.
Encryption - Applying a specific algorithm to data in order to alter the data’s
appearance and prevent other devices from reading information. Decryption
applies the algorithm in reverse to restore the data to its original form.
Ethernet - A baseband LAN specification invented by Xerox Corporation and de-
veloped jointly by Xerox, Intel, and Digital Equipment Corporation. Ethernet net-
works operate at 10 Mbps using CSMA/CD to run over coaxial cable. Ethernet is
similar to a series of standards produced by IEEE referred to as IEEE 802.3.
Fast Ethernet - A 100 Mbps technology based on the 10Base-T Ethernet CSMA/
CD network access method.
Firewall - A firewall is a set of related programs, located at a network gateway
server, which protects the resources of a network from users from other net-
works. (The term also implies the security policy that is used with the programs.)
An enterprise with an intranet that allows its workers access to the wider Internet
installs a firewall to prevent outsiders from accessing its own private data resources
and for controlling what outside resources to which its own users have access.
Basically, a firewall, working closely with a router, examines each network packet
to determine whether to forward it toward its destination.
Firmware - Programming that is inserted into programmable read-only memory,
thus becoming a permanent part of a computing device.
Fragmentation - Breaking a packet into smaller units when transmitting over a
network medium that cannot support the original size of the packet.
FTP (File Transfer Protocol) – 1. An IP application protocol for transferring files
between network nodes. 2. An Internet protocol that allows a user on one host to
transfer files to and from another host over a network.