ZyXEL Communications Prestige 964 User Manual page 47

and that evolved from the ARPANET of the late 60's and early 70's. The Internet now (July
1995) connects roughly 60,000 independent networks into a vast global internet
Internet Worm See Worm.
Intranet A private network inside a company or organization that uses the same kinds of software that you
would find on the public Internet, but that is only for internal use.
Intruder Person or software interested in breaking computer security to access, modify, or damage data.
Also see Cracker.
IP Internet Protocol he IP (currently IP version 4, or IPv4), is the underlying protocol for routing
packets on the Internet and other TCP/IP-based networks.
IPCP (PPP) IP Control Protocol allows changes to IP parameters such as the IP address.
IPX Internetwork Packet eXchange The native NetWare internetworking protocol is IPX
(Internetwork Packet Exchange). Like IP (Internet Protocol), IPX is an internetworking protocol
that provides datagram services.
IRC Internet Relay Chat. IRC was developed in the late 1980s as a way for multiple users on a system
to "chat" over the network. Today IRC is a very popular way to "talk" in real time with other
people on the Internet. However, IRC is also one avenue hackers use to get information from you
about your system and your company. Moreover, IRC sessions are prone to numerous attacks
that while not dangerous can cause your system to crash.
ISP Internet Service Providers provide connections into the Internet for home users and businesses.
There are local, regional, national, and global ISPs. You can think of local ISPs as the
gatekeepers into the Internet.
LAN Local Area Network is a shared communication system to which many computers are attached.
A LAN, as its name implies, is limited to a local area. This has to do more with the electrical
characteristics of the medium than the fact that many early LANs were designed for departments,
although the latter accurately describes a LAN as well. LANs have different topologies, the most
common being the linear bus and the star configuration.
Linux A version of the UNIX operating system designed to run on IBM Compatible computers.
Logic Bomb A virus that only activates itself when certain conditions are met. Logic bombs usually damage
files or cause other serious problems when they are activated.
MAC On a local area network (LAN) or other network, the MAC (Media Access Control) address is
your computer's unique hardware number. (On an Ethernet LAN, it's the same as your Ethernet
address.) The MAC layer frames data for transmission over the network, then passes the frame to
the physical layer interface where it is transmitted as a stream of bits.
Multimedia Cable Network System is the consortium behind the DOCSIS standard for cable
MCNS
modems.
Multiple Service Operators. A cable TV service provider that also provides other services such as
MSO
data and/or voice telephony.
Name Resolution The allocation of an IP address to a host name. See DNS
NAT Network Address Translation is the translation of an Internet Protocol address used within one
network to a different IP address known within another network - see also SUA.
NDIS Network Driver Interface Specification is a Windows specification for how communication
protocol programs (such as TCP/IP) and network device drivers should communicate with each
other.
Glossary
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