Panasonic 7 - Manual (Page 167)

Glossary 167
firewall
A collection of hardware and software components that controls
communication between two networks, such as a private network and the
Internet. All information passed between the two networks must pass through
the firewall. The firewall allows only authorized traffic to pass between the
networks.
VPN Router
A communications device or program that passes data between networks
having similar functions but dissimilar implementations.
interface
The connection between a router and one of its attached networks. An
interface to a network has a single IP address and mask associated with it.
Internet
The single, interconnected, worldwide system of commercial, government,
educational, and other computer networks that share a set of protocols.
Internet Protocol (IP)
The transport layer protocol used by the Internet Protocol family for
transporting information among computers.
Internet Security Association and Key Management Protocol (ISAKMP)
Defines how encryption keys for sessions are initiated and updated.
intranet
A computer network, especially one based on Internet technology, that an
organization uses for its own internal, and usually private, purposes and that is
closed to outsiders.
Nortel VPN Router Configuration — Basic Features