{"id":1293,"date":"2012-11-19T13:17:14","date_gmt":"2012-11-19T15:17:14","guid":{"rendered":"http:\/\/efagundes.com\/openclass_networking\/?page_id=1293"},"modified":"2022-01-16T17:53:24","modified_gmt":"2022-01-16T20:53:24","slug":"como-um-firewall-pode-proteger-uma-rede-interna-1","status":"publish","type":"page","link":"https:\/\/efagundes.com\/networking\/seguranca-de-redes\/como-um-firewall-pode-proteger-uma-rede-interna-1\/","title":{"rendered":"Como um firewall pode proteger uma rede interna (I)"},"content":{"rendered":"<p><a href=\"https:\/\/i0.wp.com\/efagundes.com\/networking\/wp-content\/uploads\/sites\/5\/2012\/11\/Slide281.png\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" data-attachment-id=\"2728\" data-permalink=\"https:\/\/efagundes.com\/networking\/seguranca-de-redes\/como-um-firewall-pode-proteger-uma-rede-interna-1\/slide281\/\" data-orig-file=\"https:\/\/i0.wp.com\/efagundes.com\/networking\/wp-content\/uploads\/sites\/5\/2012\/11\/Slide281.png?fit=960%2C720&amp;ssl=1\" data-orig-size=\"960,720\" data-comments-opened=\"1\" data-image-meta=\"{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;0&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;&quot;,&quot;orientation&quot;:&quot;0&quot;}\" data-image-title=\"Slide281\" data-image-description=\"\" data-image-caption=\"\" data-large-file=\"https:\/\/i0.wp.com\/efagundes.com\/networking\/wp-content\/uploads\/sites\/5\/2012\/11\/Slide281.png?fit=960%2C720&amp;ssl=1\" class=\"alignnone size-full wp-image-2728\" src=\"https:\/\/i0.wp.com\/efagundes.com\/networking\/wp-content\/uploads\/sites\/5\/2012\/11\/Slide281.png?resize=960%2C720\" alt=\"Slide281\" width=\"960\" height=\"720\" srcset=\"https:\/\/i0.wp.com\/efagundes.com\/networking\/wp-content\/uploads\/sites\/5\/2012\/11\/Slide281.png?w=960&amp;ssl=1 960w, https:\/\/i0.wp.com\/efagundes.com\/networking\/wp-content\/uploads\/sites\/5\/2012\/11\/Slide281.png?resize=300%2C225&amp;ssl=1 300w\" sizes=\"auto, (max-width: 960px) 100vw, 960px\" \/><\/a><\/p>\n","protected":false},"excerpt":{"rendered":"","protected":false},"author":1,"featured_media":0,"parent":1205,"menu_order":294,"comment_status":"closed","ping_status":"open","template":"","meta":{"footnotes":""},"class_list":["post-1293","page","type-page","status-publish","hentry"],"jetpack_shortlink":"https:\/\/wp.me\/P8yKGp-kR","jetpack-related-posts":[{"id":1296,"url":"https:\/\/efagundes.com\/networking\/seguranca-de-redes\/como-um-firewall-pode-proteger-uma-rede-interna-2\/","url_meta":{"origin":1293,"position":0},"title":"Como um firewall pode proteger uma rede interna (II)","author":"Eduardo Fagundes","date":"19\/11\/2012","format":false,"excerpt":"","rel":"","context":"Post similar","block_context":{"text":"Post similar","link":""},"img":{"alt_text":"Slide282","src":"https:\/\/i0.wp.com\/efagundes.com\/networking\/wp-content\/uploads\/sites\/5\/2012\/11\/Slide282.png?resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/efagundes.com\/networking\/wp-content\/uploads\/sites\/5\/2012\/11\/Slide282.png?resize=350%2C200 1x, https:\/\/i0.wp.com\/efagundes.com\/networking\/wp-content\/uploads\/sites\/5\/2012\/11\/Slide282.png?resize=525%2C300 1.5x, https:\/\/i0.wp.com\/efagundes.com\/networking\/wp-content\/uploads\/sites\/5\/2012\/11\/Slide282.png?resize=700%2C400 2x"},"classes":[]},{"id":787,"url":"https:\/\/efagundes.com\/networking\/algoritmos-de-roteamento\/tecnicas-para-se-alcancar-boa-qualidade-de-servico-algoritmo-do-balde-furado\/","url_meta":{"origin":1293,"position":1},"title":"T\u00e9cnicas para se alcan\u00e7ar boa qualidade de servi\u00e7o: algoritmo do balde furado","author":"Eduardo Fagundes","date":"18\/11\/2012","format":false,"excerpt":"Outra t\u00e9cnica para alcan\u00e7ar boa qualidade de servi\u00e7o \u00e9 o algoritmo do balde furado. Imagine um balde com um pequeno furo no fundo, como ilustra a figura (a) acima. Independente da velocidade com que a \u00e1gua entra no balde, o fluxo de sa\u00edda ocorrer\u00e1 em uma taxa constante, \u03c1, quando\u2026","rel":"","context":"Post similar","block_context":{"text":"Post similar","link":""},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/efagundes.com\/networking\/wp-content\/uploads\/sites\/5\/2015\/03\/Slide333.jpg?resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/efagundes.com\/networking\/wp-content\/uploads\/sites\/5\/2015\/03\/Slide333.jpg?resize=350%2C200 1x, https:\/\/i0.wp.com\/efagundes.com\/networking\/wp-content\/uploads\/sites\/5\/2015\/03\/Slide333.jpg?resize=525%2C300 1.5x, https:\/\/i0.wp.com\/efagundes.com\/networking\/wp-content\/uploads\/sites\/5\/2015\/03\/Slide333.jpg?resize=700%2C400 2x"},"classes":[]},{"id":68,"url":"https:\/\/efagundes.com\/networking\/hardware-de-rede\/redes-locais-e-distribuidas\/","url_meta":{"origin":1293,"position":2},"title":"Redes Locais e Distribu\u00eddas","author":"Eduardo Fagundes","date":"16\/11\/2012","format":false,"excerpt":"Uma rede local (LAN) \u00e9 uma rede de comunica\u00e7\u00f5es que serve a usu\u00e1rios dentro de uma \u00e1rea geogr\u00e1fica limitada. Os \" clientes \" s\u00e3o tipicamente workstations que rodam Windows, embora tamb\u00e9m sejam utilizados clientes Mac e clientes Linux . Os \" servidores \" armazenam os programas e dados que s\u00e3o\u2026","rel":"","context":"Post similar","block_context":{"text":"Post similar","link":""},"img":{"alt_text":"Slide9","src":"https:\/\/i0.wp.com\/efagundes.com\/networking\/wp-content\/uploads\/sites\/5\/2015\/03\/Slide9.jpg?resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/efagundes.com\/networking\/wp-content\/uploads\/sites\/5\/2015\/03\/Slide9.jpg?resize=350%2C200 1x, https:\/\/i0.wp.com\/efagundes.com\/networking\/wp-content\/uploads\/sites\/5\/2015\/03\/Slide9.jpg?resize=525%2C300 1.5x, https:\/\/i0.wp.com\/efagundes.com\/networking\/wp-content\/uploads\/sites\/5\/2015\/03\/Slide9.jpg?resize=700%2C400 2x"},"classes":[]},{"id":1156,"url":"https:\/\/efagundes.com\/networking\/protocolos-tcpip\/roteamento-em-segmentos-diferentes\/","url_meta":{"origin":1293,"position":3},"title":"Roteamento em segmentos diferentes","author":"Eduardo Fagundes","date":"19\/11\/2012","format":false,"excerpt":"O dispositivo C est\u00e1 agindo como um host entre as duas redes. 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Ele torna invis\u00edvel a estes usu\u00e1rios quaisquer aspectos inerentes ao modo como os recursos de comunica\u00e7\u00e3o dispon\u00edveis s\u00e3o utilizados para conseguir esta transpar\u00eancia. O servi\u00e7o de rede pode ser provido mediante o uso de\u2026","rel":"","context":"Post similar","block_context":{"text":"Post similar","link":""},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/efagundes.com\/networking\/wp-content\/uploads\/sites\/5\/2015\/03\/Slide220.jpg?resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/efagundes.com\/networking\/wp-content\/uploads\/sites\/5\/2015\/03\/Slide220.jpg?resize=350%2C200 1x, https:\/\/i0.wp.com\/efagundes.com\/networking\/wp-content\/uploads\/sites\/5\/2015\/03\/Slide220.jpg?resize=525%2C300 1.5x, https:\/\/i0.wp.com\/efagundes.com\/networking\/wp-content\/uploads\/sites\/5\/2015\/03\/Slide220.jpg?resize=700%2C400 2x"},"classes":[]},{"id":758,"url":"https:\/\/efagundes.com\/networking\/algoritmos-de-roteamento\/roteamento-por-difusao\/","url_meta":{"origin":1293,"position":5},"title":"Roteamento por difus\u00e3o","author":"Eduardo Fagundes","date":"18\/11\/2012","format":false,"excerpt":"Para algumas aplica\u00e7\u00f5es os hosts precisam enviar mensagens a muitos outros hosts. 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