G L O S S A R Y
B-6
Security Appliance User Guide
Version 3R2
B
PPPoE:
Point-to-Point Protocol over Ethernet. Used to allow ISPs the use
of their existing Radius authentication systems from their Dial-Up service
on a Broadband/Ethernet-based service.
Remote authentication dial-in user service (RADIUS):
provides an
authentication, authorization and accounting protocol for applications
such as network access or IP mobility. When used it is intended to work
in both local and remote situations.
RJ-45:
An 8-wire connector commonly used to connect multiple
computers into a local area network (LAN). Standard RJ-45 connectors
are slightly wider than the standard RJ-11 connector used for all
telephone connections.
Router:
A device that forwards packets between various networks using
both the network layer information and router tables. Routers can be
used either on a local area network (LAN) or wide area network (WAN).
The most command use for a router is to connect a LAN to an Internet
Service Provider (ISP).
Routing Information Protocol (RIP):
One of the most commonly
used interior gateway protocol (IGP) routing protocols on internal
networks (and to a lesser extent, networks connected to the Internet),
which helps routers dynamically adapt to changes of network
connections by communicating information about which networks each
router can reach and how far away those networks are.
Routing Table:
Table that contains real-time information on all
networks available through the router. Most routing tables include media
access control (MAC) and IP address information.
Secure Hash Algorithm-1 (SHA-1):
A one-way hash function. This
hash function takes variable length messages and formats it to a fixed
length using a 20-byte key to produce a 160-bit hash.
Secure Shell (SSH):
A protocol that enables secure device
management. SSH is used to securely manage the freeGuard Blaze
2100.
Security Association (SA):
A method for creating a virtual private
network (VPN) tunnel. The SA includes all of the required security
perimeters to secure communication. Since this communication is bi-
directional, two SAs are required to establish communication.
Security Parameter Index (SPI):
A hexadecimal number used to
uniquely define each virtual private network (VPN) tunnel. The SPI
