Programa o
dispositivo que realiza una acción en representación de otro. [CCN-STIC-641:2006]
Dispositivo
pasarela que implementa la funcionalidad cliente/servidor de uno o más
protocolos o aplicaciones, según los RFC o estándares correspondientes, con el
objetivo de servir peticiones a servidores en nombre de los clientes que lo
utilizan. [CCN-STIC-401:2007]
Dispositivo
"proxy" con el objetivo de servir peticiones de clientes externos de
nuestra red protegiendo el acceso a un servicio externo. [CCN-STIC-401:2007]
Dispositivo
"proxy" con la capacidad de
interceptar el tráfico a nivel de red sin que sea percibido por parte de los
clientes. [CCN-STIC-401:2007]
Servidor de
comunicaciones, responsable de canalizar el tráfico entre una red privada e
Internet, que contiene un cortafuegos a nivel físico. [Ribagorda:1997]
An application that “breaks”
the connection between client and server. The proxy accepts certain types of
traffic entering or leaving a network and processes it and forwards it.
Note: This effectively
closes the straight path between the internal and external networks making it
more difficult for an attacker to obtain internal addresses and other details
of the organization’s internal network. Proxy servers are available for common
Internet services; for example, a Hyper Text Transfer Protocol (HTTP) proxy
used for Web access, and a Simple Mail Transfer Protocol (SMTP) proxy used for
e-mail. [CNSSI_4009:2010]
A software application
running on a firewall or on a dedicated proxy server that is capable of
filtering a protocol and routing it between the interfaces of the device. [CNSSI_4009:2010]
A server that services the
requests of its clients by forwarding those requests to other servers. [CNSSI_4009:2010]
1. (I) A computer process
that acts on behalf of a user or client.
2. (I) A computer process --often
used as, or as part of, a firewall-- that relays application transactions or a
protocol between client and server computer systems, by appearing to the client
to be the server and appearing to the server to be the client. (See: SOCKS.)
[RFC4949:2007]
A server that acts as an
intermediary between users and the Internet to enable security, caching,
administrative control, and policy enforcements.
http://iab.com/
A software agent, often a
firewall mechanism, which performs a function or operation on behalf of another
application or system while hiding the details involved.
http://www.symantec.com/avcenter/refa.html
Service qui sépare la
communication entre un réseau local et un réseau externe. Le proxy sert de
filtre et de protection d'adressage direct de communication permettant de
cacher la topologie du réseau local aux utilisateurs du réseau externe et
interdisant ces derniers à entrer en communication directe avec des machines du
réseau local. Le proxy permet également de concentrer les accès en provenance
de plusieurs machines du réseau local vers différents services sur des machines
du réseau externe, on garantie ainsi une facilité dans la gestion de la
sécurité des communications sortantes en n'autorisant grâce au firewall qu'une
seule machine à accéder au réseau externe et non pas individuellement chaque
machine du réseau local.
http://www.cases.public.lu/functions/glossaire/