{"id":24792,"date":"2024-03-04T13:07:42","date_gmt":"2024-03-04T13:07:42","guid":{"rendered":"https:\/\/blog.lacnic.net\/?p=24792"},"modified":"2024-03-04T13:10:50","modified_gmt":"2024-03-04T13:10:50","slug":"bgp-stream-um-ano-de-analise-sobre-incidentes-bgp","status":"publish","type":"post","link":"https:\/\/blog.lacnic.net\/pt-br\/bgp-stream-um-ano-de-analise-sobre-incidentes-bgp\/","title":{"rendered":"BGP Stream: um ano de an\u00e1lise sobre incidentes BGP"},"content":{"rendered":"\n<p>Por <a href=\"https:\/\/blog.lacnic.net\/pt-br\/autor\/alejandro-acosta\">Alejandro Acosta<\/a>, Coordenador de I+D no LACNIC<\/p>\n\n\n\n<p>O LACNIC apresenta <a href=\"https:\/\/stats.labs.lacnic.net\/BGP\/bgpstream-lac-region.html\" target=\"_blank\" rel=\"noreferrer noopener\">a primeira p\u00e1gina<\/a> on-line que mostra os incidentes e an\u00e1lises de dados de medi\u00e7\u00e3o do Border Gateway Protocol (BGP) na Am\u00e9rica Latina e o Caribe.<\/p>\n\n\n\n<p><strong>EVENTOS PRINCIPAIS. <\/strong>Al\u00e9m de resumir as informa\u00e7\u00f5es, s\u00e3o apreciados os tr\u00eas principais eventos que s\u00e3o: poss\u00edveis sequestros de rede, interrup\u00e7\u00f5es BGP e vazamentos de rotas.<\/p>\n\n\n\n<p><strong>Poss\u00edvel sequestro de rede:<\/strong> \u00e9 a aquisi\u00e7\u00e3o ileg\u00edtima de conjuntos de endere\u00e7os IP, corrompendo as tabelas de roteamento da Internet. Isso acontece tradicionalmente quando o sistema aut\u00f4nomo anuncia um prefixo que n\u00e3o lhe pertence.<\/p>\n\n\n\n<p><strong>Interrup\u00e7\u00f5es (outages):<\/strong> refere-se \u00e0 perda de visibilidade dos prefixos de rede por um grupo majorit\u00e1rio de sensores.<\/p>\n\n\n\n<p><strong>Vazamentos de rotas:<\/strong> como o nome sugere, refere-se ao an\u00fancio (possivelmente) n\u00e3o intencional de algum prefixo de rede via BGP. Por exemplo, em uma troca de tr\u00e1fego de peering privado, algum dos participantes anuncia o prefixo do peer \u00e0 Internet. Este \u00e9 o caso mais dif\u00edcil de detectar pelos algoritmos e n\u00e3o consegue identificar alguns desses incidentes.<\/p>\n\n\n\n<p><strong>Como os dados s\u00e3o obtidos? <\/strong><strong><\/strong><\/p>\n\n\n\n<p>Esta iniciativa usa <a href=\"https:\/\/bgpstream.crosswork.cisco.com\" target=\"_blank\" rel=\"noreferrer noopener\">BGP Stream da Cisco<\/a>, um processo automatizado que seleciona os incidentes maiores e mais importantes, que tipo de situa\u00e7\u00e3o \u00e9 e quais ASN est\u00e3o envolvidos.<\/p>\n\n\n<section class=\"acf-view acf-view--id--21788 acf-view--object-id--24792\"><div class=\"acf-view__texto_fijo acf-view__row\"><div class=\"acf-view__texto_fijo-field acf-view__field\"><div class=\"acf-view__texto_fijo-choice acf-view__choice\">Leer tambi\u00e9n:<\/div><\/div><\/div><div class=\"acf-view__enlace acf-view__row\"><div class=\"acf-view__enlace-field acf-view__field\"><a target=\"_self\" class=\"acf-view__enlace-link acf-view__link\" href=\"https:\/\/blog.lacnic.net\/pt-br\/interconexao\/um-rfc-necessario-sobre-bgp-o-as-path-prepending\">Um RFC necess\u00e1rio sobre BGP: o AS Path Prepending<\/a><\/div><\/div><\/section>\n\n\n<p>As informa\u00e7\u00f5es s\u00e3o publicadas abertamente uma vez que o LACNIC considera que s\u00e3o informa\u00e7\u00f5es importantes para que engenheiros, respons\u00e1veis de redes e organiza\u00e7\u00f5es possam conhecer os incidentes mais comuns da regi\u00e3o e conscientizar sobre a situa\u00e7\u00e3o.<\/p>\n\n\n\n<p>Isso permite a pesquisa eficiente de eventos, prototipagem r\u00e1pida e ferramentas complexas e aplicativos de monitoramento em grande escala (por exemplo, detec\u00e7\u00e3o de interrup\u00e7\u00f5es de conectividade, ataques ou sequestros de BGP).<\/p>\n\n\n\n<p>A partir de um sistema desenvolvido pela \u00e1rea de I+D do LACNIC, os dados brutos s\u00e3o obtidos, plotados, identificados, limpos e armazenados em um banco de dados para posteriormente gerar estat\u00edsticas e gr\u00e1ficos. Isso ocorre a cada 24 horas de forma automatizada.<\/p>\n\n\n\n<p><strong>RESULTADOS. <\/strong>Durante o per\u00edodo estudado \u2212fevereiro de 2023 a fevereiro de 2024\u2212 observamos os resultados que mostramos no gr\u00e1fico a seguir, que comparam eventos BGP globais versus eventos BGP da nossa regi\u00e3o.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" width=\"1024\" height=\"506\" src=\"https:\/\/blog.lacnic.net\/wp-content\/uploads\/2024\/03\/fig1-bgp-events-worldwide-1024x506.png\" alt=\"\" class=\"wp-image-24769\" srcset=\"https:\/\/blog.lacnic.net\/wp-content\/uploads\/2024\/03\/fig1-bgp-events-worldwide-1024x506.png 1024w, https:\/\/blog.lacnic.net\/wp-content\/uploads\/2024\/03\/fig1-bgp-events-worldwide-300x148.png 300w, https:\/\/blog.lacnic.net\/wp-content\/uploads\/2024\/03\/fig1-bgp-events-worldwide-768x379.png 768w, https:\/\/blog.lacnic.net\/wp-content\/uploads\/2024\/03\/fig1-bgp-events-worldwide-1536x759.png 1536w, https:\/\/blog.lacnic.net\/wp-content\/uploads\/2024\/03\/fig1-bgp-events-worldwide.png 1842w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p>Comparando o gr\u00e1fico global com o gr\u00e1fico da regi\u00e3o, vemos que a ordem dos incidentes \u00e9 semelhante (o maior \u00e9 outages, seguido por poss\u00edveis sequestros de rede e terminando com vazamentos de prefixo). Adicionalmente, cabe ressaltar que na nossa regi\u00e3o as interrup\u00e7\u00f5es (outages) s\u00e3o mais frequentes em compara\u00e7\u00e3o ao total global de eventos BGP.<\/p>\n\n\n\n<p>Ao analisar a tabela de resultados que mostra eventos BGP mundiais versus eventos BGP da nossa regi\u00e3o, encontramos os seguintes fatos.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" width=\"1024\" height=\"408\" src=\"https:\/\/blog.lacnic.net\/wp-content\/uploads\/2024\/03\/fig2-bgp-events-worldwide-1024x408.png\" alt=\"\" class=\"wp-image-24772\" srcset=\"https:\/\/blog.lacnic.net\/wp-content\/uploads\/2024\/03\/fig2-bgp-events-worldwide-1024x408.png 1024w, https:\/\/blog.lacnic.net\/wp-content\/uploads\/2024\/03\/fig2-bgp-events-worldwide-300x120.png 300w, https:\/\/blog.lacnic.net\/wp-content\/uploads\/2024\/03\/fig2-bgp-events-worldwide-768x306.png 768w, https:\/\/blog.lacnic.net\/wp-content\/uploads\/2024\/03\/fig2-bgp-events-worldwide-1536x612.png 1536w, https:\/\/blog.lacnic.net\/wp-content\/uploads\/2024\/03\/fig2-bgp-events-worldwide-2048x816.png 2048w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p><strong>TOP 5 pa\u00edses<\/strong> da nossa regi\u00e3o com interrup\u00e7\u00f5es BGP (Outages)<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table><tbody><tr><td>Outages<\/td><td>&nbsp;<\/td><\/tr><tr><td><strong>CC<\/strong><strong><\/strong><\/td><td><strong>Eventos<\/strong><\/td><\/tr><tr><td>BR<\/td><td>781<\/td><\/tr><tr><td>AR<\/td><td>99<\/td><\/tr><tr><td>HT<\/td><td>24<\/td><\/tr><tr><td>MX<\/td><td>22<\/td><\/tr><tr><td>CL<\/td><td>17<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p><strong>TOP 5 pa\u00edses <\/strong>da nossa regi\u00e3o com sequestros de prefixos (Possible Hijacks)<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table><tbody><tr><td><strong>Esperado CC<\/strong><strong><\/strong><\/td><td><strong>Detectado CC<\/strong><\/td><td><strong>Eventos<\/strong><\/td><\/tr><tr><td>BR<\/td><td>BR<\/td><td>67<\/td><\/tr><tr><td>BR<\/td><td>Nenhum<\/td><td>35<\/td><\/tr><tr><td>PY<\/td><td>BR<\/td><td>24<\/td><\/tr><tr><td>BR<\/td><td>US<\/td><td>22<\/td><\/tr><tr><td>BR<\/td><td>CN<\/td><td>9<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p><strong>TOP 3 pa\u00edses <\/strong>da nossa regi\u00e3o com vazamentos de rotas (Route Leaks)<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table><tbody><tr><td><strong>Origem CC<\/strong><strong><\/strong><\/td><td><strong>Vazador CC<\/strong><\/td><td><strong>Eventos<\/strong><\/td><\/tr><tr><td>VE<\/td><td>VE<\/td><td>7<\/td><\/tr><tr><td>MX<\/td><td>MX<\/td><td>5<\/td><\/tr><tr><td>CL<\/td><td>PA<\/td><td>2<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p><strong>O impacto<\/strong><strong><\/strong><\/p>\n\n\n\n<p>Neste primeiro ano de opera\u00e7\u00e3o, desde o LACNIC observamos uma diminui\u00e7\u00e3o nos incidentes BGP, entre as raz\u00f5es para estes resultados podemos identificar: a) a implanta\u00e7\u00e3o e ado\u00e7\u00e3o do Sistema de Certifica\u00e7\u00e3o de Recursos (RPKI); b) o Registro de Roteamento da Internet do LACNIC (IRR) e a ado\u00e7\u00e3o do RFC 9234 (Fun\u00e7\u00f5es no BGP).<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" width=\"1024\" height=\"209\" src=\"https:\/\/blog.lacnic.net\/wp-content\/uploads\/2024\/03\/fig3-bgp-events-worldwide-1024x209.png\" alt=\"\" class=\"wp-image-24775\" srcset=\"https:\/\/blog.lacnic.net\/wp-content\/uploads\/2024\/03\/fig3-bgp-events-worldwide-1024x209.png 1024w, https:\/\/blog.lacnic.net\/wp-content\/uploads\/2024\/03\/fig3-bgp-events-worldwide-300x61.png 300w, https:\/\/blog.lacnic.net\/wp-content\/uploads\/2024\/03\/fig3-bgp-events-worldwide-768x157.png 768w, https:\/\/blog.lacnic.net\/wp-content\/uploads\/2024\/03\/fig3-bgp-events-worldwide-1536x313.png 1536w, https:\/\/blog.lacnic.net\/wp-content\/uploads\/2024\/03\/fig3-bgp-events-worldwide-2048x417.png 2048w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p>A ado\u00e7\u00e3o dessas ferramentas est\u00e1 ocorrendo devido \u00e0s melhores pr\u00e1ticas das operadoras e \u00e0 promo\u00e7\u00e3o do MANRS pela ISOC.<\/p>\n\n\n\n<p><strong>Conclus\u00f5es<\/strong><strong><\/strong><\/p>\n\n\n\n<p>Os potenciais sequestros de rede (BGP Hijacks), interrup\u00e7\u00f5es BGP (Outages) e vazamentos de rotas s\u00e3o os incidentes BGP mais comuns. Durante o primeiro ano de coleta de dados observa-se uma diminui\u00e7\u00e3o destes casos; no entanto, no futuro pr\u00f3ximo, eles n\u00e3o desaparecer\u00e3o completamente. \u00c9 fundamental implementar medidas robustas de redund\u00e2ncia e resili\u00eancia nas redes, bem como a detec\u00e7\u00e3o e preven\u00e7\u00e3o precoce de poss\u00edveis sequestros para garantir a integridade e fiabilidade das rotas da Internet.<\/p>\n\n\n\n<p>No LACNIC procuramos conscientizar e motivar os ISP e as organiza\u00e7\u00f5es a estarem preparados para enfrentar esses incidentes de forma eficiente quando eles ocorrerem.<\/p>\n\n\n\n<p><strong>Refer\u00eancias:<\/strong><strong><\/strong><\/p>\n\n\n\n<p><a href=\"https:\/\/stats.labs.lacnic.net\/BGP\/bgpstream-lac-region.html\" target=\"_blank\" rel=\"noreferrer noopener\">https:\/\/stats.labs.lacnic.net\/BGP\/bgpstream-lac-region.html<\/a><\/p>\n\n\n\n<p><a href=\"https:\/\/stats.labs.lacnic.net\/BGP\/bgpstream.html\" target=\"_blank\" rel=\"noreferrer noopener\">https:\/\/stats.labs.lacnic.net\/BGP\/bgpstream.html<\/a><\/p>\n\n\n\n<p><a href=\"https:\/\/bgpstream.crosswork.cisco.com\/\" target=\"_blank\" rel=\"noreferrer noopener\">https:\/\/bgpstream.crosswork.cisco.com\/<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Por Alejandro Acosta, Coordenador de I+D no LACNIC O LACNIC apresenta a primeira p\u00e1gina on-line que mostra os incidentes e an\u00e1lises de dados de medi\u00e7\u00e3o do Border Gateway Protocol (BGP) na Am\u00e9rica Latina e o Caribe. EVENTOS PRINCIPAIS. Al\u00e9m de resumir as informa\u00e7\u00f5es, s\u00e3o apreciados os tr\u00eas principais eventos que s\u00e3o: poss\u00edveis sequestros de rede, [&hellip;]<\/p>\n","protected":false},"author":6,"featured_media":24778,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":false,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2}},"categories":[920],"tags":[1281],"archivo":[1346,1452],"taxonomy-authors":[1247],"tipo_autor":[],"class_list":["post-24792","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-roteamento","tag-roteamento","archivo-edicoes-anteriores","archivo-destaques-2023","taxonomy-authors-alejandro-acosta-pt-br"],"acf":{"author":"Alejandro Acosta, Coordenador de I+D no LACNIC","related_notes":""},"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.0 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>LACNIC Blog | BGP Stream: um ano de an\u00e1lise sobre incidentes BGP<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/blog.lacnic.net\/pt-br\/bgp-stream-um-ano-de-analise-sobre-incidentes-bgp\/\" \/>\n<meta property=\"og:locale\" content=\"pt_BR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"LACNIC Blog | BGP Stream: um ano de an\u00e1lise sobre incidentes BGP\" \/>\n<meta property=\"og:description\" content=\"Por Alejandro Acosta, Coordenador de I+D no LACNIC O LACNIC apresenta a primeira p\u00e1gina on-line que mostra os incidentes e an\u00e1lises de dados de medi\u00e7\u00e3o do Border Gateway Protocol (BGP) na Am\u00e9rica Latina e o Caribe. 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