Glossary
AlterPath Manager E2000 Manual Glossary-9
of the Internet Engineering Task Force (IETF). PPP is
commonly used when remote computers call an Internet
service provider (ISP) or a corporate server that is configured
to receive incoming calls.
Profile Usage setup of the ACS either as a Console Access Server
(CAS), a Terminal Server, or a Remote Access Server.
Proxy ARP The technique in which one machine, usually a router,
answers ARP (Address Resolution Protocol) requests
intended for another machine. By "faking" its identity, the
router accepts responsibility for routing packets to the "real"
destination. Proxy ARP allows a site to use a single IP
address with two physical networks. Subnetting would
normally be a better solution.
RADIUS Remote Authentication Dial-In User Service is a client/server
protocol and software that enables remote access servers to
communicate with a central server to authenticate dial-in
users and authorize their access to the requested system or
service. RADIUS allows a company to maintain user profiles
in a central database that all remote servers can share.
Root Access Root is the term for a very highly privileged administrative
user (particularly in unix environments). When an ISP grants
you root access, it means you will have full control of the
server. With full control, you will be able to install any
software and access any file on that server.
Routing Table The Routing Table defines which interface should transmit an
IP packet based on destination IP information.
Secure Shell (SSH) SSH has the same functionality as Telnet (see definition for
Teln et ), but adds security by encrypting data before sending
it through the network.
Server Farm A collection of servers running in the same location (see
Cluster).