- RADIUS
- Remote Authentication
Dial In User Service is a protocol which allows an
Authentication Server to authenticate, authorise and
carry configuration information for one or more
Network Access servers. These have links, typically
for dialup access clients, that need authentication.
This allows username and password information to be
held in one place for many access lines. The current
definition of RADIUS is in RFC
2865 and RFC
2866 for accounting (originally in RFC
2058 and RFC
2059 respectively) with several others for
extensions, such as IP Version 6 at RFC
3162.
- Rainbow
- a package for the PC
allowing file transfer and terminal access between
Ethernet based PCs and Ethernet or X25 based hosts,
via Coloured Book protocols, running over Pink Book
protocol. Written by Edinburgh University. Of
historical interest.
- RARE
- See: Reseaux Associes
pour la Recherche Europeenne
- RARP
- See: Reverse Address
Resolution Protocol
- RBL
- Real-time Blackhole
List, a MAPS service for blocking electronic mail from
rogue mail relays.
- RBOC
- Regional Bell Operating
Company [Source: RFC1392]
- RCP
- See: Remote copy program
- RDN
- Regional Distribution
Network, a sort of organisation for a Metropolitan
Area Network. See also RPAN.
- Read the Fine Manual
(RTFM)
- This acronym is often
used when someone asks a simple or common question.
Replace "Fine" with a more vulgar word if
desired.
- Read the Source Code
(RTSC)
- This acronym is often
used when a software developer asks a question about
undocumented code. [Source: RFC1983]
- reassembly
- The IP process in which
a previously fragmented packet is reassembled before
being passed to the transport layer. See also:
fragmentation. [Source: RFC1392]
- recursion
- The facility of a
programming language to be able to call functions from
within themselves.
- recursive
- See: recursive [Source:
RFC1392]
- Red Book
- Red Book Job Transfer
and Manipulation Protocol; a JTMP used in the UK
academic and research community. See also JTMP.
- regional
- See: mid-level network.
[Source: RFC1392]
- remote login
- Operating on a remote
computer, using a protocol over a computer network, as
though locally attached. See also: Telnet. [Source:
RFC1392]
- Remote Procedure Call
(RPC)
- An easy and popular
paradigm for implementing the client-server model of
distributed computing. In general, a request is sent
to a remote system to execute a designated procedure,
using arguments supplied, and the result returned to
the caller. There are many variations and subtleties
in various implementations, resulting in a variety of
different (incompatible) RPC protocols. [Source:
RFC1208]
- repeater
- A device which
propagates electrical signals from one cable to
another. See also: bridge, gateway, router. [Source:
RFC1392]
- Request For Comments
(RFC)
- The document series,
begun in 1969, which describes the Internet suite of
protocols and related experiments. Not all (in fact
very few) RFCs describe Internet standards, but all
Internet standards are written up as RFCs. The RFC
series of documents is unusual in that the proposed
protocols are forwarded by the Internet research and
development community, acting on their own behalf, as
opposed to the formally reviewed and standardized
protocols that are promoted by organizations such as
CCITT and ANSI. See also: BCP, For Your Information,
STD. [Source: RFC1392]
- Reseaux Associes pour
la Recherche Europeenne (RARE)
- European association of
research networks. [Source: RFC1208]
- Reseaux IP Europeenne
(RIPE)
- A collaboration between
European networks which use the TCP/IP protocol suite.
[Source: RFC1392]
- resolve
- Translate an Internet
name into its equivalent IP address or other DNS
information.
- Reverse Address
Resolution Protocol (RARP)
- A protocol, defined in RFC
903, which provides the reverse function of ARP.
RARP maps a hardware (MAC) address to an internet
address. It is used primarily by diskless nodes when
they first initialize to find their internet address.
See also: Address Resolution Protocol, BOOTP, internet
address, MAC address. [Source: RFC1392]
- RFC
- See: Request For
Comments
- RFC 822
- The Internet standard
format for electronic mail message headers. Mail
experts often refer to "822 messages". The
name comes from "RFC 822", which contains
the specification (STD 11, RFC
822). 822 format was previously known as 733
format. See also: Electronic Mail. [Source: COMER]
- RFD (Request For
Discussion)
- Usually a two- to
three-week period in which the particulars of
newsgroup creation are battled out.
- RIP
- See: Routing Information
Protocol
- RIPA
- Regulation of
Investigatory Powers Act.
- RIPE
- See: Reseaux IP
Europeenne
- RJE
- Remote Job Entry.
- rlogin
- A service offered by
Berkeley UNIX which allows users of one machine to log
into other UNIX systems (for which they are
authorized) and interact as if their terminals were
connected directly. Similar to Telnet. [Source:
RFC1208]
- ROSE
- Remote Operations
Service Element. A lightweight RPC protocol, used in
OSI Message Handling, Directory, and Network
Management application protocols. [Source: RFC1208]
- Round-Trip Time (RTT)
- A measure of the current
delay on a network. [Source: MALAMUD]
- route
- The path that network
traffic takes from its source to its destination.
Also, a possible path from a given host to another
host or destination. [Source: RFC1392]
- routed
- Route Daemon. A program
which runs under 4.2BSD/4.3BSD UNIX systems (and
derived operating systems) to propagate routes among
machines on a local area network, using the RIP
protocol. Pronounced "route-dee". See also:
Routing Information Protocol, gated. [Source: RFC1392]
- router
- A device which forwards
traffic between networks. The forwarding decision is
based on network layer information and routing tables,
often constructed by routing protocols. See also:
bridge, gateway, Exterior Gateway Protocol, Interior
Gateway Protocol. [Source: RFC1392]
- routing
- The process of selecting
the correct interface and next hop for a packet being
forwarded. See also: hop, router, Exterior Gateway
Protocol, Interior Gateway Protocol. [Source: RFC1392]
- routing domain
- A set of routers
exchanging routing information within an
administrative domain. See also: Administrative
Domain, router. [Source: RFC1392]
- Routing Information
Protocol (RIP)
- A distance vector, as
opposed to link state, routing protocol. It is an
Internet standard IGP defined in STD 34, RFC
1058 (updated by RFC
1388). See also: Interior Gateway Protocol, Open
Shortest Path First.... [Source: RFC1392]
- RPAN
- Regional Partner
Academic Network - a sort of organisation for a
Metropolitan Area Network. See also RDN.
- RPC
- See: Remote Procedure
Call
- RSA
- A public-key
cryptographic system which may be used for encryption
and authentication. It was invented in 1977 and named
for its inventors: Ron Rivest, Adi Shamir, and Leonard
Adleman. See also: encryption, Data Encryption
Standard, Pretty Good Privacy. [Source: RFC1983]
- RSC
- Regional Support Centre,
a JISC-sponsored service to further (and higher)
education institutions.
- RSS
- Relay Spam Stopper, a
method of rejecting electronic mail from rogue mail
relays.
- RTFM
- See: Read the Fine
Manual
- RTSC
- See: Read the Source
Code
- RTSE
- Reliable Transfer
Service Element. A lightweight OSI application service
used above X.25 networks to handshake application PDUs
across the Session Service and TP0. Not needed with
TP4, and not recommended for use in the U.S. except
when talking to X.400 ADMDs. [Source: RFC1208]
- RTT
- See: Round-Trip Time
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