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a network number and a host number, or a network number, a subnet
number, and a host number.
IP Spoof — A type of DoS attack. An IP spoof uses a fake IP address to
bypass security settings which may bar access from the real IP address.
IRC — Internet Relay Chat. Provides a way of communicating in real time
with people from all over the world.
ISP — Internet Service Provider. A business that provides Internet access
to individuals or organizations.
Firewall — Used in this guide to refer to the SuperStack 3 Firewall.
Land Attack — A type of DoS attack. In a Land attack, a packet is sent
that appears to come from the same address and port that it is sent to.
This can hang the machine to which it is sent.
Management Station — This is the workstation from which you run the
Web interface for the Firewall.
Web interface — This is the Web-based application which you use to set
up the Firewall to protect your network from attack and to control access
to the Internet for LAN users.
NAT — Network Address Translation. NAT refers to the process of
converting the IP addresses used within a private network to Internet IP
addresses.
NTP — Network Time Protocol. This allows the Firewall to automatically
set the local time, via an NTP server on the Internet
NNTP — Network News Transfer Protocol. This protocol is used to
distribute Usenet news articles over the Internet.
Ping of Death — A type of DoS attack. The Internet Protocol (IP) defines
the maximum size for a Ping packet. However, some Ping programs can
send packets that are larger than this size which can cause some systems
to crash.
PPPoE — PPPoE stands for Point-to-Point Protocol over Ethernet and is
based on two widely accepted standards, Point-to-Point Protocol (PPP)
and Ethernet. PPPoE is a method for personal computers to connect to a
broadband service (typically DSL).
DUA1611-0AAA02.book Page 14 Thursday, August 2, 2001 4:01 PM