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_ translator-credits Sergio Carlavilla carlavilla@FreeBSD.org, 2020
Filtering Bridges Filtering Bridges
<email>ale@FreeBSD.org</email> <email>ale@FreeBSD.org</email>
<personname><firstname>Alex</firstname><surname>Dupre</surname></personname><affiliation> <_:address-1/> </affiliation> <personname><firstname>Alex</firstname><surname>Dupre</surname></personname><affiliation> <_:address-1/> </affiliation>
FreeBSD is a registered trademark of the FreeBSD Foundation. FreeBSD is a registered trademark of the FreeBSD Foundation.
3Com and HomeConnect are registered trademarks of 3Com Corporation. 3Com and HomeConnect are registered trademarks of 3Com Corporation.
Intel, Celeron, Centrino, Core, EtherExpress, i386, i486, Itanium, Pentium, and Xeon are trademarks or registered trademarks of Intel Corporation or its subsidiaries in the United States and other countries. Intel, Celeron, Centrino, Core, EtherExpress, i386, i486, Itanium, Pentium, and Xeon are trademarks or registered trademarks of Intel Corporation or its subsidiaries in the United States and other countries.
Many of the designations used by manufacturers and sellers to distinguish their products are claimed as trademarks. Where those designations appear in this document, and the FreeBSD Project was aware of the trademark claim, the designations have been followed by the <quote>™</quote> or the <quote>®</quote> symbol. Many of the designations used by manufacturers and sellers to distinguish their products are claimed as trademarks. Where those designations appear in this document, and the FreeBSD Project was aware of the trademark claim, the designations have been followed by the <quote>™</quote> or the <quote>®</quote> symbol.
$FreeBSD: head/en_US.ISO8859-1/articles/filtering-bridges/article.xml 53717 2019-12-29 14:13:50Z carlavilla $ $FreeBSD$
Often it is useful to divide one physical network (like an Ethernet) into two separate segments without having to create subnets, and use a router to link them together. The device that connects the two networks in this way is called a bridge. A FreeBSD system with two network interfaces is enough in order to act as a bridge. A menudo es útil dividir una red física (por ejemplo una Ethernet) en dos segmentos separados sin tener que crear subredes y usar un router para vincularlas. El dispositivo que conecta las dos redes se llama bridge. Un sistema FreeBSD con dos interfaces de red es suficiente para actuar como bridge.
A bridge works by scanning the addresses of <acronym>MAC</acronym> level (Ethernet addresses) of the devices connected to each of its network interfaces and then forwarding the traffic between the two networks only if the source and the destination are on different segments. Under many points of view a bridge is similar to an Ethernet switch with only two ports. Un bridge funciona escaneando las direcciones del nivel <acronym>MAC</acronym> (direcciones Ethernet) de los dispositivos conectados a cada una de sus interfaces de red y luego reenvía el tráfico entre las dos redes solo si la fuente y el destino están en diferentes segmentos. En muchos aspectos, un bridge es similar a un switch de Ethernet con solo dos puertos.
Why use a filtering bridge? ¿Por qué utilizar un bridge que haga filtrado?
More and more frequently, thanks to the lowering costs of broad band Internet connections (xDSL) and also because of the reduction of available IPv4 addresses, many companies are connected to the Internet 24 hours on 24 and with few (sometimes not even a power of 2) IP addresses. In these situations it is often desirable to have a firewall that filters incoming and outgoing traffic from and towards Internet, but a packet filtering solution based on router may not be applicable, either due to subnetting issues, the router is owned by the connectivity supplier (<acronym>ISP</acronym>), or because it does not support such functionalities. In these scenarios the use of a filtering bridge is highly advised. Sucede con bastante frecuencia que, gracias a la reducción del coste de las conexiones de banda ancha a Internet (xDSL) y a la reducción de las direcciones IPv4 disponibles, muchas empresas están conectadas a Internet las 24 horas del día y con pocas (a veces ni siquiera dos) direcciones IP. A menudo en estas situaciones es necesario tener un firewall (también conocido como cortafuegos) que filtre el tráfico entrante y saliente desde y hacia Internet, pero una solución de filtrado de paquetes puede que no sea posible posible, ya sea por problemas de subredes, porque el router sea de propiedad del proveedor de servicios de internet (<acronym>ISP</acronym>), o porque no admite tales funcionalidades. En escenarios como estos se recomienda el uso de un brigde que realice el filtrado.
A bridge-based firewall can be configured and inserted between the xDSL router and your Ethernet hub/switch without any IP numbering issues. Una buena solución sería configurar un firewall basado en un bridge. Lo instalaremos entre el router xDSL y su hub/switch Ethernet, evitando así problemas de numeración IP.
How to Install Proceso de instalación
Adding bridge functionalities to a FreeBSD system is not difficult. Since 4.5 release it is possible to load such functionalities as modules instead of having to rebuild the kernel, simplifying the procedure a great deal. In the following subsections I will explain both installation ways. No es difícil añadir funcionalidades de brigde a un sistema FreeBSD. Desde la versión 4.5 es posible cargar funcionalidades como módulos en lugar de tener que volver a compilar el kernel, lo cual simplifica mucho el procedimiento. En las siguientes subsecciones explicaré ambas formas de instalación.

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This translation Translated FreeBSD Doc/articles_filtering-bridge
The following strings have the same context and source.
Translated FreeBSD Doc/articles_freebsd-questions Sergio Carlavilla carlavilla@FreeBSD.org, 2019
Aaron H Farias Martinez Timido@Ubuntu.com, 2020
Translated FreeBSD Doc/articles_ipsec-must Sergio Carlavilla carlavilla@FreeBSD.org, 202019
Translated FreeBSD Doc/articles_mailing-list-faq Equipo de traducción de FreeBSD al Español
Sergio Carlavilla carlavilla@FreeBSD.org, 202019
Translated FreeBSD Doc/articles_gjournal-desktop Sergio Carlavilla carlavilla@FreeBSD.org, 202019
Translated FreeBSD Doc/articles_pgpkeys Sergio Carlavilla carlavilla@FreeBSDmailbox.org, 202019
Translated FreeBSD Doc/articles_leap-seconds Federico Caminiti demian.fc@gmail.com
Sergio Carlavilla carlavilla@FreeBSDmailbox.org, 202019
Translated FreeBSD Doc/books_fdp-primer Sergio Carlavilla carlavilla@FreeBSD.orgAaron H Farias Martinez Timido@ubuntu.com, 2020
Translated FreeBSD Doc/articles_port-mentor-guidelines Sergio Carlavilla carlavilla@FreeBSD.org, 202019
Translated FreeBSD Doc/articles_pr-guidelines Sergio Carlavilla carlavilla@FreeBSD.org, 2019
Aaron H Farias Martinez timido@ubuntu.com,2020
Translated FreeBSD Doc/books_porters-handbook Sergio Carlavilla carlavilla@FreeBSD.org,Aaron H Farias Martinez Timido@ubuntu.com 2020,
Translated FreeBSD Doc/articles_linux-emulation Sergio Carlavilla carlavilla@FreeBSD.org, 2019
Aaron H Farias Martinez Timido@ubuntu.com,2020
Translated FreeBSD Doc/articles_new-users Sergio Carlavilla carlavilla@FreeBSD.org, 2019
Aaron H Farias Martinez timido@ubuntu.com, 2020
Translated FreeBSD Doc/articles_fonts Sergio Carlavilla carlavilla@FreeBSD.org, 2019, 2020
Translated FreeBSD Doc/books_developers-handbook Sergio Carlavilla carlavilla@FreeBSD.orgAaron H Farias Martinez Timido@ubuntu.com, 2020,
Translated FreeBSD Doc/articles_problem-reports Juan F. Rodriguez jrh@it.uc3m.es, 2007
Sergio Carlavilla carlavilla@FreeBSDmailbox.org, 202019
Translated FreeBSD Doc/articles_pam Sergio Carlavilla carlavilla@FreeBSD.org, 2020créditos de traducción
Translated FreeBSD Doc/articles_building-products Sergio Carlavilla carlavilla@FreeBSD.orgManuel Megías joramsinkin@hotmail.com, 2018
Aaron H Farias Martinez timido@ubuntu.com, 2020
Translated FreeBSD Doc/articles_linux-users Sergio Carlavilla carlavilla@FreeBSD.orgEquipo de traducción de FreeBSD al Español
Sergio Carlavilla carlavilla@FreeBSD.org, 2019
Aaron H Farias Martinez timido@ubuntu.com, 2020
Translated FreeBSD Doc/articles_releng Equipo de traducción de FreeBSD al Español,
Sergio Carlavilla carlavilla@FreeBSD.org, 202019

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FreeBSD Doc / articles_filtering-bridge — Spanish

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Sergio Carlavilla carlavilla@FreeBSD.org, 201920
a year ago
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FreeBSD Doc / articles_filtering-bridge — Spanish

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Manuel Megías joramsinkin@hotmail.com, 2018
Sergio Carlavilla carlavilla@FreeBSDmailbox.org, 2019
a year ago
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FreeBSD Doc / articles_filtering-bridge — Spanish

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FreeBSD Doc / articles_filtering-bridge — Spanish

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Put one translator per line, in the form NAME <EMAIL>, YEAR1, YEAR2
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a year ago
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articles/es_ES/filtering-bridges.po, string 1