{"id":5401,"date":"2021-09-21T14:07:01","date_gmt":"2021-09-21T11:07:01","guid":{"rendered":"https:\/\/vasexperts.com\/?p=5401"},"modified":"2025-08-11T14:13:56","modified_gmt":"2025-08-11T11:13:56","slug":"cgnat-how-to-start-using-and-why-you-need-it","status":"publish","type":"post","link":"https:\/\/vasexperts.com\/br\/blog\/cg-nat\/cgnat-how-to-start-using-and-why-you-need-it\/","title":{"rendered":"CG-NAT \u2014 como come\u00e7ar a usar e por que voc\u00ea precisa dele"},"content":{"rendered":"<h2>Como funciona o CG-NAT<\/h2>\r\nCom a solu\u00e7\u00e3o <a href=\"\/br\/solutions\/cgnat-ipv6-migration\/\" target=\"_blank\" rel=\"noopener\">CG-NAT<\/a>, o ISP tem a capacidade de alocar um endere\u00e7o IPv4 p\u00fablico para v\u00e1rios clientes. Assim, \u00e9 mais f\u00e1cil implementar o IPv6, estendendo o uso do IPv4. O sistema de monitoramento e an\u00e1lise de tr\u00e1fego <a href=\"\/br\/products\/stingray\/\">The Stingray Service Getaway<\/a> foi desenvolvido para ISPs, mas voc\u00ea tamb\u00e9m pode us\u00e1-lo para substituir dispositivos NAT em sua infraestrutura de TI. A solu\u00e7\u00e3o foi projetada para funcionar de forma eficaz em qualquer ambiente: caso sua infraestrutura de rede cres\u00e7a ou mude, \u00e9 f\u00e1cil ajust\u00e1-la \u00e0s suas necessidades.\r\n<h2>Alternativas<\/h2>\r\nAqui est\u00e3o algumas solu\u00e7\u00f5es alternativas ao CG-NAT e suas vantagens e desvantagens do ponto de vista dos usu\u00e1rios.\r\n\r\n<ul>\r\n \t<li>   <strong>  A10 Networks Thunder.   <\/strong>   Como vantagens, os usu\u00e1rios observam pre\u00e7os acess\u00edveis sem mudan\u00e7as repentinas, alta confiabilidade da solu\u00e7\u00e3o, bem como raras falhas, facilidade de uso, interface gr\u00e1fica intuitiva e documenta\u00e7\u00e3o detalhada. Entre as desvantagens, os usu\u00e1rios citam os problemas da solu\u00e7\u00e3o com o rastreamento do uso simult\u00e2neo de m\u00faltiplas portas.<\/li>\r\n \t<li>   <strong>  F5 BIG-IP.   <\/strong>   Os usu\u00e1rios apreciam a facilidade de uso, um bom sistema de prote\u00e7\u00e3o contra intrus\u00e3o externa e um grande n\u00famero de fun\u00e7\u00f5es dispon\u00edveis e flex\u00edveis. Por outro lado, existem os pontos fracos da solu\u00e7\u00e3o, como a velocidade lenta, problemas ocasionais de conex\u00e3o e o fato de fornecer poucas informa\u00e7\u00f5es em caso de problemas (por isso, \u00e0s vezes, n\u00e3o fica muito claro como exatamente a situa\u00e7\u00e3o pode ser resolvida).<\/li>\r\n \t<li>   <strong>  Cisco ASR 9000.   <\/strong>   Os usu\u00e1rios apreciam o ecossistema familiar da Cisco, a confiabilidade e a facilidade de uso. Quanto \u00e0s desvantagens, eles observam problemas com a documenta\u00e7\u00e3o e bugs ocasionais na arquitetura interna.<\/li>\r\n<\/ul>\r\n\r\n<noscript><img loading=\"lazy\" decoding=\"async\" src=\"\/wp-content\/uploads\/2021\/09\/02-1024x576.jpg\" alt=\"Alternative solutions CG-NAT\" width=\"1024\" height=\"576\" class=\"alignnone size-large wp-image-5446\" srcset=\"\/wp-content\/uploads\/2021\/09\/02-1024x576.jpg 1024w, \/wp-content\/uploads\/2021\/09\/02-300x169.jpg 300w, \/wp-content\/uploads\/2021\/09\/02-768x432.jpg 768w, \/wp-content\/uploads\/2021\/09\/02-1536x864.jpg 1536w, \/wp-content\/uploads\/2021\/09\/02.jpg 1601w\" sizes=\"(max-width: 1024px) 100vw, 1024px\"><\/noscript><img loading=\"lazy\" decoding=\"async\" src=\"\/wp-content\/uploads\/2021\/09\/02-1024x576.jpg\" alt=\"Alternative solutions CG-NAT\" width=\"1024\" height=\"576\" class=\"alignnone size-large wp-image-5446 lazyload\" sizes=\"(max-width: 1024px) 100vw, 1024px\" data-src=\"\/wp-content\/uploads\/2021\/09\/02-1024x576.jpg\" data-srcset=\"\/wp-content\/uploads\/2021\/09\/02-1024x576.jpg 1024w, \/wp-content\/uploads\/2021\/09\/02-300x169.jpg 300w, \/wp-content\/uploads\/2021\/09\/02-768x432.jpg 768w, \/wp-content\/uploads\/2021\/09\/02-1536x864.jpg 1536w, \/wp-content\/uploads\/2021\/09\/02.jpg 1601w\">\r\n\r\nAl\u00e9m disso, voc\u00ea pode implementar o CG-NAT de forma independente, com a ajuda de seus especialistas t\u00e9cnicos. H\u00e1 exemplos de casos de sucesso em recursos relacionados a telecomunica\u00e7\u00f5es. Uma vantagem neste caso \u00e9 a    <strong>  possibilidade de controle total   <\/strong>   da solu\u00e7\u00e3o por voc\u00ea (seus engenheiros entenderiam a arquitetura exata da solu\u00e7\u00e3o). A principal desvantagem \u00e9 que criar a funcionalidade CG-NAT por conta pr\u00f3pria \u00e9 um trabalho \u00e1rduo e constante e    <strong>  exige recursos   <\/strong>  . Portanto, \u00e9 mais prov\u00e1vel que muitas empresas simplesmente utilizem uma solu\u00e7\u00e3o pronta para uso.\r\n<h2>Pr\u00f3s do CG-NAT como parte do Stingray SG<\/h2>\r\n<ol>\r\n\t<li>Ele torna o uso do espa\u00e7o de endere\u00e7os IPv4 o mais eficiente poss\u00edvel.<\/li>\r\n\t<li>Atende aos requisitos especificados na RFC 4787 (Requisitos Comportamentais de Tradu\u00e7\u00e3o de Endere\u00e7os de Rede (NAT) para UDP Unicast) e na RFC 6888 (Requisitos Comuns para NATs de N\u00edvel de Operadora), o que garante a opera\u00e7\u00e3o est\u00e1vel do sistema.<\/li>\r\n\t<li>O Stingray Service Getaway pode executar 128 milh\u00f5es de sess\u00f5es simultaneamente.<\/li>\r\n\t<li>Voc\u00ea pode escalar a solu\u00e7\u00e3o dinamicamente e aumentar a taxa de transfer\u00eancia sem interrup\u00e7\u00e3o do tr\u00e1fego.<\/li>\r\n\t<li>Gerenciamento unificado de todas as funcionalidades da plataforma.<\/li>\r\n\t<li>As tradu\u00e7\u00f5es s\u00e3o registradas e disponibilizadas como logs ou podem ser transferidas para um coletor externo via NetFlow v10 (IPFIX).<\/li>\r\n<\/ol>\r\n[product id=\u201d19\u2033]\r\n<h2>Como configurar o NAT no Stingray SG<\/h2>\r\nEle pode ser facilmente configurado com apenas dois comandos.\r\n\r\nCrie um perfil com um \u00fanico comando, aqui est\u00e1:\r\n<pre>fdpi_ctrl load profile --service 11  --profile.name test_nat\r\n--profile.json '{ \"nat_ip_pool\" : \"5.200.43.0\/24,5.200.44\/25\",\r\n\"nat_tcp_max_sessions\" : 2000, \"nat_udp_max_sessions\" : 2000 }'<\/pre>\r\nO outro comando para lig\u00e1-lo:\r\n<pre>fdpi_ctrl load --service 11 --profile.name test_nat --ip 192.168.0.1<\/pre>\r\nou:\r\n<pre>fdpi_ctrl load --service 11 --profile.name test_nat --login test_subs<\/pre>\r\nou:\r\n<pre>fdpi_ctrl load --service 11 --profile.name test_nat --cidr 192.168.1.0\/24<\/pre>\r\n<h2>Gerenciamento CG-NAT via interface gr\u00e1fica<\/h2>\r\n<ul>\r\n \t<li><p>Carregar em perfis e pool de endere\u00e7os NAT<\/p><noscript><img loading=\"lazy\" decoding=\"async\" src=\"\/wp-content\/uploads\/2021\/09\/nagruzka-na-puly-1024x598.png\" alt=\"GUI Load on profiles and NAT address pool\" width=\"1024\" height=\"598\" class=\"alignnone size-large wp-image-5448\" srcset=\"\/wp-content\/uploads\/2021\/09\/nagruzka-na-puly-1024x598.png 1024w, \/wp-content\/uploads\/2021\/09\/nagruzka-na-puly-300x175.png 300w, \/wp-content\/uploads\/2021\/09\/nagruzka-na-puly-768x448.png 768w, \/wp-content\/uploads\/2021\/09\/nagruzka-na-puly.png 1492w\" sizes=\"(max-width: 1024px) 100vw, 1024px\"><\/noscript><img loading=\"lazy\" decoding=\"async\" src=\"\/wp-content\/uploads\/2021\/09\/nagruzka-na-puly-1024x598.png\" alt=\"GUI Load on profiles and NAT address pool\" width=\"1024\" height=\"598\" class=\"alignnone size-large wp-image-5448 lazyload\" sizes=\"(max-width: 1024px) 100vw, 1024px\" data-src=\"\/wp-content\/uploads\/2021\/09\/nagruzka-na-puly-1024x598.png\" data-srcset=\"\/wp-content\/uploads\/2021\/09\/nagruzka-na-puly-1024x598.png 1024w, \/wp-content\/uploads\/2021\/09\/nagruzka-na-puly-300x175.png 300w, \/wp-content\/uploads\/2021\/09\/nagruzka-na-puly-768x448.png 768w, \/wp-content\/uploads\/2021\/09\/nagruzka-na-puly.png 1492w\">\r\n<\/li>\r\n\r\n \t<li><p>Estat\u00edsticas NAT (carga de porta)<\/p><noscript><img><\/noscript><img data-src=\"\" class=\" lazyload\"><noscript><img loading=\"lazy\" decoding=\"async\" src=\"\/wp-content\/uploads\/2021\/09\/nat-statistika-nagruzka-na-porty-1024x547.png\" alt=\"GUI NAT statistics (port load)\" width=\"1024\" height=\"547\" class=\"alignnone size-large wp-image-5450\" srcset=\"\/wp-content\/uploads\/2021\/09\/nat-statistika-nagruzka-na-porty-1024x547.png 1024w, \/wp-content\/uploads\/2021\/09\/nat-statistika-nagruzka-na-porty-300x160.png 300w, \/wp-content\/uploads\/2021\/09\/nat-statistika-nagruzka-na-porty-768x410.png 768w, \/wp-content\/uploads\/2021\/09\/nat-statistika-nagruzka-na-porty-1536x820.png 1536w, \/wp-content\/uploads\/2021\/09\/nat-statistika-nagruzka-na-porty.png 1540w\" sizes=\"(max-width: 1024px) 100vw, 1024px\"><\/noscript><img loading=\"lazy\" decoding=\"async\" src=\"\/wp-content\/uploads\/2021\/09\/nat-statistika-nagruzka-na-porty-1024x547.png\" alt=\"GUI NAT statistics (port load)\" width=\"1024\" height=\"547\" class=\"alignnone size-large wp-image-5450 lazyload\" sizes=\"(max-width: 1024px) 100vw, 1024px\" data-src=\"\/wp-content\/uploads\/2021\/09\/nat-statistika-nagruzka-na-porty-1024x547.png\" data-srcset=\"\/wp-content\/uploads\/2021\/09\/nat-statistika-nagruzka-na-porty-1024x547.png 1024w, \/wp-content\/uploads\/2021\/09\/nat-statistika-nagruzka-na-porty-300x160.png 300w, \/wp-content\/uploads\/2021\/09\/nat-statistika-nagruzka-na-porty-768x410.png 768w, \/wp-content\/uploads\/2021\/09\/nat-statistika-nagruzka-na-porty-1536x820.png 1536w, \/wp-content\/uploads\/2021\/09\/nat-statistika-nagruzka-na-porty.png 1540w\">\r\n<\/li>\r\n\r\n \t<li><p>Estat\u00edsticas sobre a convers\u00e3o de endere\u00e7os IP privados em p\u00fablicos<\/p><noscript><img><\/noscript><img data-src=\"\" class=\" lazyload\"><noscript><img loading=\"lazy\" decoding=\"async\" src=\"\/wp-content\/uploads\/2021\/09\/statistika-preobrazovanij-1024x625.png\" alt=\"GUI Statistics on the conversion of private IP addresses to public ones\" width=\"1024\" height=\"625\" class=\"alignnone size-large wp-image-5451\" srcset=\"\/wp-content\/uploads\/2021\/09\/statistika-preobrazovanij-1024x625.png 1024w, \/wp-content\/uploads\/2021\/09\/statistika-preobrazovanij-300x183.png 300w, \/wp-content\/uploads\/2021\/09\/statistika-preobrazovanij-768x469.png 768w, \/wp-content\/uploads\/2021\/09\/statistika-preobrazovanij.png 1351w\" sizes=\"(max-width: 1024px) 100vw, 1024px\"><\/noscript><img loading=\"lazy\" decoding=\"async\" src=\"\/wp-content\/uploads\/2021\/09\/statistika-preobrazovanij-1024x625.png\" alt=\"GUI Statistics on the conversion of private IP addresses to public ones\" width=\"1024\" height=\"625\" class=\"alignnone size-large wp-image-5451 lazyload\" sizes=\"(max-width: 1024px) 100vw, 1024px\" data-src=\"\/wp-content\/uploads\/2021\/09\/statistika-preobrazovanij-1024x625.png\" data-srcset=\"\/wp-content\/uploads\/2021\/09\/statistika-preobrazovanij-1024x625.png 1024w, \/wp-content\/uploads\/2021\/09\/statistika-preobrazovanij-300x183.png 300w, \/wp-content\/uploads\/2021\/09\/statistika-preobrazovanij-768x469.png 768w, \/wp-content\/uploads\/2021\/09\/statistika-preobrazovanij.png 1351w\">\r\n<\/li>\r\n<\/ul>\r\n<h2>Caracter\u00edsticos<\/h2>\r\nO Stingray Service Getaway possui uma <a href=\"\/br\/products\/cgnat\/\">op\u00e7\u00e3o NAT Full Cone integrada<\/a> que permite o envio de pacotes de    <strong>  qualquer fonte   <\/strong>   em uma porta TCP\/UDP externa mapeada. Isso facilita o monitoramento da atividade de servi\u00e7os ponto a ponto (como torrents, jogos, etc.). Todas as conex\u00f5es de clientes de um endere\u00e7o IP interno s\u00e3o vinculadas a um endere\u00e7o IP externo devido ao pool de endere\u00e7os IP pareados.\r\n\r\nH\u00e1 tamb\u00e9m prote\u00e7\u00e3o b\u00e1sica contra    <strong>  ataques DDoS   <\/strong>  . Funciona simplesmente assim: se houver uma tentativa de conex\u00e3o a um endere\u00e7o externo em uma determinada porta, o dispositivo NAT verifica se h\u00e1 alguma conex\u00e3o configurada para essa porta. Caso contr\u00e1rio, a conex\u00e3o ser\u00e1 encerrada.\r\n\r\n[product id=\u201d23\u2033]\r\n\r\nAl\u00e9m disso, caso um dos assinantes seja    <strong>  infectado por malware,   <\/strong>   podemos limitar o n\u00famero de portas UDP e TCP utilizadas, para que n\u00e3o ocupe todos os recursos da rede. Nesse caso, nem todos os assinantes ser\u00e3o infectados, mas apenas um deles.\r\n\r\nAl\u00e9m disso, existe uma tecnologia chamada    <strong>  Hairpinning   <\/strong>  . Ela permite que todos os assinantes por tr\u00e1s de um NAT acessem os endere\u00e7os p\u00fablicos uns dos outros sem encaminhar pacotes para fora do dispositivo e traduzi-los para fora do dispositivo.\r\n\r\n<span class=\"h2-style\">Observa\u00e7\u00e3o<\/span>\r\n\r\nO Stingray SG deve operar em    <strong>  modo em linha   <\/strong>   para que a fun\u00e7\u00e3o <a href=\"\/br\/products\/cgnat\/\" target=\"_blank\" rel=\"noopener\">CG-NAT<\/a> funcione corretamente.\r\n\r\nA Stingray SG <a href=\"\/br\/products\/bras-bng\/\">BRAS<\/a> or Complete license is also required for this. Address translation speed depends on the selected license and hardware platform: it can    <strong>  be from 6 to 200 Gbit\/s   <\/strong>  . We also recommend installing a backup platform in case of emergency situations.\r\n\r\n[subscription id=\u201d11987\u2033]ssine nossa newsletter e fique por dentro das \u00faltimas novidades e ofertas especiais.[\/subscription]","protected":false},"excerpt":{"rendered":"<p>CG-NAT (Carrier Grade Network Address Translation) \u00e9 uma tecnologia que permite a um ISP substituir o endere\u00e7o IP local de um usu\u00e1rio por um endere\u00e7o p\u00fablico em redes TCP\/IP. Vamos descobrir como o CG-NAT \u00e9 implementado no Stingray Service Getaway e por que ele \u00e9 a solu\u00e7\u00e3o certa para voc\u00ea.<\/p>\n","protected":false},"author":7,"featured_media":5425,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[45],"tags":[],"class_list":["post-5401","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-cg-nat"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v23.1 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>(English) VASExperts<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/vasexperts.com\/blog\/cg-nat\/cgnat-how-to-start-using-and-why-you-need-it\/\",\"url\":\"https:\/\/vasexperts.com\/blog\/cg-nat\/cgnat-how-to-start-using-and-why-you-need-it\/\",\"name\":\"[:en]CG-NAT - 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