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GlossaryD
Ethernet
A very common method of networking computers in a LAN. There are a number of
adaptations to the IEEE 802.3 Ethernet standard, including adaptations with data
rates of 10 Mbits/sec and 100 Mbits/sec over coaxial cable, twisted-pair cable, and
fiber-optic cable. The latest version of Ethernet, Gigabit Ethernet, has a data rate of 1
Gbit/sec.
Events These are network activities. Some activities are direct attacks on your system, while
others might be depending on the circumstances. Therefore, any activity, regardless
of severity is called an event. An event may or may not be a direct attack on your
system.
FAQ
(Frequently Asked Questions) – FAQs are documents that list and answer the most
common questions on a particular subject.
FCC
The FCC (Federal Communications Commission) is in charge of allocating the
electromagnetic spectrum and thus the bandwidth of various communication
systems.
Flash Memory
The nonvolatile storage that can be electrically erased and reprogrammed so that
data can be stored, booted, and rewritten as necessary.
Foreign
Exchange
If your local central office is not scheduled to have ISDN for a while, it may be
possible to obtain ISDN service from a nearby central office. This is called Foreign
Exchange. There are additional charges associated with this type of service.
FTP
File Transfer Protocol is an Internet file transfer service that operates on the Internet
and over TCP/IP networks. FTP is basically a client/server protocol in which a system
running the FTP server accepts commands from a system running an FTP client. The
service allows users to send commands to the server for uploading and downloading
files. FTP is popular on the Internet because it allows for speedy transfer of large files
between two systems.
Gateway
A gateway is a computer system or other device that acts as a translator between
two systems that do not use the same communication protocols, data formatting
structures, languages, and/or architecture.
HDLC
HDLC (High-level Data Link Control) is a bit-oriented (the data is monitored bit by
bit), link layer protocol for the transmission of data over synchronous networks.
Host
Any computer on a network that is a repository for services available to other
computers on the network. It is quite common to have one host machine provide
several services, such as WWW and USENET.
HTTP Hyper Text Transfer Protocol. The most common protocol used on the Internet.
HTTP is the primary protocol used for web sites and web browsers. It is also prone to
certain kinds of attacks.
IANA
Internet Assigned Number Authority acts as the clearinghouse to assign and
coordinate the use of numerous Internet protocol parameters such as Internet
addresses, domain names, protocol numbers, and more. The IANA Web site is at
http://www.isi.edu/iana.
ICMP
Internet Control Message Protocol is a message control and error-reporting protocol
between a host server and a gateway to the Internet. ICMP uses Internet Protocol