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466 AlterPath KVM/net Installation, Administration, and User’s Guide
older protocol, SLIP, as it is more stable and has more error-
checking features.
PPP has been a widely used Internet standard for sending
datagrams over a communications link. The PPP standard is
described in RFC 1661 by the Point-to-Point Working Group 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.
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.
RC4 Rivest Cipher four, an encryption method using variable length
secret key streams. RC4 is an alternate to DES and is
approximately ten times as fast as DES; however, it is less secure.
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.
RPC Short for Remote Procedure Call. A type of protocol that allows a
program on one computer to execute a program on a server. Using
RPC, a system developer do not need to develop specific
procedures for the server. The client program sends a message to
the server with appropriate arguments and the server returns a
message containing the results of the program executed.
Secure Shell (SSH) See SSH