slovodefinícia
gateway
(mass)
gateway
- brána, priechod, vjazd
gateway
(encz)
gateway,brána n: Zdeněk Brož
gateway
(encz)
gateway,průchod n: Zdeněk Brož
gateway
(encz)
gateway,vjezd n: Zdeněk Brož
Gateway
(gcide)
Gateway \Gate"way`\ (g[=a]t"w[=a]`), n.
A passage through a fence or wall; a gate; also, a frame,
arch, etc., in which a gate in hung, or a structure at an
entrance or gate designed for ornament or defense.
[1913 Webster]
gateway
(wn)
gateway
n 1: an entrance that can be closed by a gate
gateway
(foldoc)
gateway

1. A deprecated term for a device that enables
data to flow between different networks (forming an
internet).

Preferred terms are "protocol converter" (connects networks
that use different protocols), "router" (connects two
broadcast networks at layer 3 (network layer). Another
example is a mail gateway, which is a layer 7 ({application
layer}) gateway.

2. An interface between an information source
and a web server. Common Gateway Interface
is a standard for such interfaces. The information source
can be any system that can be accessed by a program running on
the web server. A typical example is a {relational
database}.

(2000-05-24)
podobné slovodefinícia
gateway
(mass)
gateway
- brána, priechod, vjazd
gateway
(encz)
gateway,brána n: Zdeněk Brožgateway,průchod n: Zdeněk Brožgateway,vjezd n: Zdeněk Brož
gateway drug
(encz)
gateway drug, n:
gateways
(encz)
gateways,brány n: pl. Zdeněk Brož
gateway
(wn)
gateway
n 1: an entrance that can be closed by a gate
gateway drug
(wn)
gateway drug
n 1: a habit-forming drug that is not addictive but its use may
lead to the use of other addictive drugs; "one college
athlete recently called beer a gateway drug for young
people"
gateway to the west
(wn)
Gateway to the West
n 1: the largest city in Missouri; a busy river port on the
Mississippi River near its confluence with the Missouri
River; was an important staging area for wagon trains
westward in the 19th century [syn: Saint Louis, {St.
Louis}, Gateway to the West]
border gateway protocol
(foldoc)
Border Gateway Protocol
BGP

(BGP) An Exterior Gateway Protocol defined in
RFC 1267 and RFC 1268. BGP's design is based on
experience gained with Exterior Gateway Protocol (EGP), as
defined in STD 18, RFC 904 and EGP usage in the NSFNet
backbone, as described in RFC 1092 and RFC 1093.

(1994-11-29)
common gateway interface
(foldoc)
Common Gateway Interface
cgi-bin
CGI program
CGI script

(CGI) A standard for running external
programs from a web HTTP server. CGI
specifies how to pass arguments to the program as part of
the HTTP request. It also defines a set of {environment
variables} that are made available to the program. The
program generates output, typically HTML, which the web
server processes and passes back to the browser.
Alternatively, the program can request URL redirection. CGI
allows the returned output to depend in any arbitrary way on
the request.

The CGI program can, for example, access information in a
database and format the results as HTML. The program can
access any data that a normal application program can, however
the facilities available to CGI programs are usually limited
for security reasons.

Although CGI programs can be compiled programs, they are more
often written in a (semi) interpreted language such as
Perl, or as Unix shell scripts, hence the common name
"CGI script".

Here is a trivial CGI script written in Perl. (It requires
the "CGI" module available from CPAN).

#!/usr/bin/perl
use CGI qw(:standard);

print header, start_html,
h1("CGI Test"),
"Your IP address is: ", remote_host(),
end_html;

When run it produces an HTTP header and then a simple HTML
page containing the IP address or hostname of the machine
that generated the initial request. If run from a command
prompt it outputs:

Content-Type: text/html; charset=ISO-8859-1




Untitled Document



CGI TestYour IP address is: localhost



The CGI program might be saved as the file "test.pl" in the
appropriate directory on a web server,
e.g. "/home/httpd/test".

Accessing the appropriate URL, e.g.
http://acme.com/test/test.pl, would cause the program to
run and a custom page produced and returned.

Early web servers required all CGI programs to be installed in
one directory called cgi-bin but it is better to keep them
with the HTML files to which they relate unless they are truly
global to the site. Similarly, it is neither necessary nor
desirable for all CGI programs to have the extension ".cgi".

Each CGI request is handled by a new process. If the process
fails to terminate for some reason, or if requests are
received faster than the server can respond to them, the
server may become swamped with processes. In order to improve
performance, Netscape devised NSAPI and Microsoft
developed the ISAPI standard which allow CGI-like tasks to
run as part of the main server process, thus avoiding the
overhead of creating a new process to handle each CGI
invocation. Other solutions include mod_perl and FastCGI.

(http://hoohoo.ncsa.uiuc.edu/cgi).

(2007-05-22)
core gateway
(foldoc)
core gateway

Historically, one of a set of gateways (routers) operated by
the Internet Network Operations Center at Bolt, Beranek and
Newman (BBN). The core gateway system formed a central part
of Internet routing in that all groups must advertise paths
to their networks from a core gateway.
exterior gateway protocol
(foldoc)
Exterior Gateway Protocol
EGP

(EGP) A protocol which distributes routing
information to the routers which connect {autonomous
systems}.

The term "gateway" is historical, and "router" is currently
the preferred term.

There is also a routing protocol called EGP defined in {STD
18}, RFC 904.

See also Border Gateway Protocol, {Interior Gateway
Protocol}.
gateway
(foldoc)
gateway

1. A deprecated term for a device that enables
data to flow between different networks (forming an
internet).

Preferred terms are "protocol converter" (connects networks
that use different protocols), "router" (connects two
broadcast networks at layer 3 (network layer). Another
example is a mail gateway, which is a layer 7 ({application
layer}) gateway.

2. An interface between an information source
and a web server. Common Gateway Interface
is a standard for such interfaces. The information source
can be any system that can be accessed by a program running on
the web server. A typical example is a {relational
database}.

(2000-05-24)
gateway 2000
(foldoc)
Gateway 2000

One of the lagest US manufacturers of {IBM
compatibles}, founded by CEO Ted Waitt in September 1985, in
Sioux City, Iowa. In 1990 the company moved to North Sioux
City, South Dakota.

In August 1994, quarterly profits were $4 million on sales of
$617 million. Sales for the first quarter of 1997 were $1.42
billion.

On 1997-05-15 Gateway bought the Amiga brand.

(http://gw2k.com/).

(1998-07-30)
interior gateway protocol
(foldoc)
Interior Gateway Protocol
IGP

(IGP) An Internet protocol which distributes
routing information to the routers within an {autonomous
system}.

The term "gateway" is historical, "router" is currently the
preferred term.

See also Exterior Gateway Protocol, {Open Shortest Path
First}, Routing Information Protocol.

(1994-11-09)
mail gateway
(foldoc)
mail gateway

A machine that connects two or more {electronic
mail} systems (including dissimilar mail systems) and
transfers messages between them. Sometimes the mapping and
translation can be quite complex, and it generally requires a
store and forward scheme whereby the message is received
from one system completely before it is transmitted to the
next system, after suitable translations.

(1996-02-26)
media gateway control protocol
(foldoc)
Media Gateway Control Protocol
MGCP

(MGCP) A protocol used within a
Voice over IP system. MGCP is an IETF work in progress,
it superseded SGCP.

MGCP is an internal protocol used within a distributed
system that appears to the outside world as a single VoIP
gateway.

This system is composed of a Call Agent, and a set of
gateways, including at least one "media gateway" that performs
the conversion of media signals between circuits and
packets, and at least one "signalling gateway" when
connected to an SS7 controlled network.

{IETF MGCP draft

(http://ietf.org/internet-drafts/draft-huitema-megaco-mgcp-v0r1-05.txt)}.

(1999-03-17)
open shortest-path first interior gateway protocol
(foldoc)
Open Shortest-Path First Interior Gateway Protocol
Open Shortest-Path First
OSPF

(OSPF) A {link state routing
protocol} that is one of the Internet standard {Interior
Gateway Protocols} defined in RFC 1247.

There is no OSPF EGP, OSPF is an IGP only.

[Relationship to Internet Protocol packet routing?]

{OSPF Design Guide
(http://cisco.com/warp/public/104/1.html)}.

(2002-06-29)
proxy gateway
(foldoc)
proxy server
bastion host
proxy gateway

A server process that intercepts requests from
a client, passes them to an origin server and returns the
response to the client while performing various other
operations in the process. An HTTP proxy server is a common
example.

A proxy may be used for purposes of security, performance
(caching) or anonymity. It may be purely software or may
run on its own hardware, either a standard PC or server
machine or a custom hardware appliance. A software proxy may
be on the same computer as the client or the origin server,
separate hardware may be anywhere on the network in between.

The proxy may filter requests, rejecting some if the request
or response matches certain conditions (e.g. an antivirus
proxy). It may cache requests and responses to reduce load on
the origin server or data volume on the network or to provide
quicker response to the client for common requests. The proxy
may modify the request or response, e.g. to convert between
different protocols or interfaces.

Proxy servers are often used in large companies as part of a
firewall so that users within the company need have no
direct connection to the Internet (and can use a {private IP
address} range) but can still access the web,
instant messenger, etc via the proxy. Usually this requires
each client to be configured to use the proxy.

The term "proxy gateway" may more imply transparency (less
intervention) in the request-response process, though is often
used as a synonym for proxy server.

(2008-07-01)
simple gateway control protocol
(foldoc)
Simple Gateway Control Protocol
SGCP

(SGCP) An IETF work in progress,
superseded by MGCP.

(1999-04-26)

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