McAfee FIREWALL 2.1-GETTING STARTED Getting Started page 37

Glossary
A function of a firewall that checks inbound and outbound packet, and allows
or blocks them, depending on predefined rules.
Password
A secret character sequence used for authentication.
Passwords can be stolen by trojans such as BO and NetBus. For better security,
consider token-based authentication or one-time passwords.
Phone Book
A set of dial-up services available on your system (look on your system for
Dial-Up Networking).
ping
An ICMP-based service used to verify the availability of computers on a
network.
POP2
Post Office Protocol, version 2. Used to transfer email.
POP3
Post Office Protocol, version 3. Used to transfer email.
Port
A number used by protocols such as TCP and UDP to identify a
communication instance.
PPP
Point-to-Point Protocol, a low-level protocol used to transport higher-level
protocols such as IP.
PPPoE
PPP over Ethernet
PPTP
Point-to-Point Tunneling Protocol
Printshare
A printer resource available through a network connection.
Protocol
Getting Started 37