{"id":167,"date":"2016-03-18T12:34:33","date_gmt":"2016-03-18T12:34:33","guid":{"rendered":"https:\/\/www.moving-it.net\/?p=167"},"modified":"2018-01-20T11:15:34","modified_gmt":"2018-01-20T09:15:34","slug":"configurar-ssh-router-cisco","status":"publish","type":"post","link":"https:\/\/www.moving-it.net\/ca\/configurar-ssh-router-cisco\/","title":{"rendered":"Com configurar SSH a un router Cisco?"},"content":{"rendered":"

En aquest article aprendrem a habilitar l’acc\u00e9s per SSH (Secure SHell) a un router Cisco.<\/p>\n

Perque habilitar SSH? No en tenim prou amb el Telnet?<\/h2>\n

\"ssh\"<\/h2>\n

Doncs no, el telnet \u00e9s un protocol d’acc\u00e9s a gesti\u00f3 de routers i altres dispositius que \u00e9s fam\u00f3s per la manca de seguretat que ofereix. La comunicaci\u00f3 no va encryptada i amb qualsevol analitzador de paquets com el Wireshark<\/a> es poden capturar les comandes que s’envien el router.<\/p>\n

Per tal d’assegurar l’acc\u00e9s i la transmissi\u00f3 de dades de manera segura \u00e9s recomenable utilitzar el protocol SSH v2. Que encrypta les comunicacions i evita que aquestes puguin ser interceptades.<\/p>\n

Com habilitem SSH a un Router Cisco?<\/h2>\n
    \n
  1. Ens conectem per consola al router Cisco. Per m\u00e9s info seguiu aquest enlla\u00e7<\/a>. Si ja teniu acc\u00e9s per Telnet tamb\u00e9 ho podeu fer.<\/li>\n
  2. Accedim a consola i haurem de posar les seg\u00fcents comandes:<\/li>\n<\/ol>\n

    Entrem en mode configuraci\u00f3 del router<\/p>\n

    Router#configure terminal<\/em><\/p>\n

    Configurem el nom del router<\/p>\n

    Router(config)#hostname R_Movingit<\/em><\/p>\n

    Configurem el domini, ja que sense aix\u00f2 no en deixar\u00e0 generar les claus de rsa.<\/p>\n

    R_Movingit(config)#ip domain-name moving-it.net<\/em><\/p>\n

    A continuaci\u00f3 generem la clau d’encryptaci\u00f3.<\/p>\n

    R_Movingit(config)#crypto key generate rsa 1028<\/em><\/p>\n

    Un cop generada, afegirem unes comandes de configuraci\u00f3 de SSH.<\/p>\n

    Si l’usuari no introdueix cap usuari ni password al cap de 30 segons, la connexi\u00f3 es tancar\u00e0 autom\u00e0ticament.<\/p>\n

    R_Movingit(config)#ip ssh time-out\u00a030<\/p>\n

    Configurem tamb\u00e9 un m\u00e0xim de 3 intents d’autenticaci\u00f3 correctes.<\/p>\n

    R_Movingit(config)#ip ssh authentication-retries\u00a03<\/p>\n

    Habilitem el protocol ssh de versi\u00f3 2 que \u00e9s m\u00e9s segur.<\/p>\n

    R_Movingit(config)#ip ssh version 2<\/p>\n

    Crearem ara un usuari amb privilege 15 (el m\u00e0xim que podr\u00e0 accedire sense haver de posar l’enable password).<\/p>\n

    R_Movingit(config)#username\u00a0admin\u00a0privilege 15 password \u00a0cisco<\/p>\n

    Anirem a configurar ara la l\u00ednia per la que entrarem, en aquests cas per xarxa que s\u00f3n les l\u00ednies vty 0 4.<\/p>\n

    R_Movingit(config)#line vty\u00a00 4<\/p>\n

    Habilitem que nom\u00e9s es pugui accedir per ssh.<\/p>\n

    R_Movingit(config-line)#transport input ssh<\/p>\n

    L’usuari que podr\u00e0 accedir per aquesta l\u00ednia s\u00f3n els definits a m\u00e0 “en local”<\/p>\n

    R_Movingit(config-line)#login local<\/p>\n

    Ual\u00e0!!Ja tenim l’acc\u00e9s per SSH habilitat. Proveu-ho i si teniu algun problema no dubteu en afegir els vostres comentaris.<\/p>\n

    Salut i ens veiem per les xarxes!!<\/p>\n","protected":false},"excerpt":{"rendered":"

    En aquest article aprendrem a habilitar l’acc\u00e9s per SSH (Secure SHell) a un router Cisco. Perque habilitar SSH? No en tenim prou amb el Telnet? Doncs no, el telnet \u00e9s un protocol d’acc\u00e9s a gesti\u00f3 de routers i altres dispositius que \u00e9s fam\u00f3s per la manca de seguretat que ofereix. […]<\/p>\n","protected":false},"author":1,"featured_media":169,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"rating_form_position":"","rating_results_position":"","mr_structured_data_type":"","footnotes":""},"categories":[4,3,5],"tags":[],"class_list":["post-167","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-cisco","category-xarxes-it-manager","category-seguretat-en-xarxes"],"yoast_head":"\nCom configurar SSH a un router Cisco? - Moving-IT<\/title>\n<meta name=\"description\" content=\"En aquest article us ajudem a configurar l'acc\u00e9s SSH per als routers Cisco. Accedeix de manera segura a administrar els teus dispositius. Seguretat Xarxes.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.moving-it.net\/ca\/configurar-ssh-router-cisco\/\" \/>\n<meta property=\"og:locale\" content=\"ca_ES\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Com configurar SSH a un router Cisco? - Moving-IT\" \/>\n<meta property=\"og:description\" content=\"En aquest article us ajudem a configurar l'acc\u00e9s SSH per als routers Cisco. Accedeix de manera segura a administrar els teus dispositius. Seguretat Xarxes.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.moving-it.net\/ca\/configurar-ssh-router-cisco\/\" \/>\n<meta property=\"og:site_name\" content=\"Moving-IT\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/movingit.net\/\" \/>\n<meta property=\"article:published_time\" content=\"2016-03-18T12:34:33+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2018-01-20T09:15:34+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.moving-it.net\/wp-content\/uploads\/2016\/03\/ssh.png\" \/>\n\t<meta property=\"og:image:width\" content=\"256\" \/>\n\t<meta property=\"og:image:height\" content=\"256\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/png\" \/>\n<meta name=\"author\" content=\"movingitadm\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@movingitnet\" \/>\n<meta name=\"twitter:site\" content=\"@movingitnet\" \/>\n<meta name=\"twitter:label1\" content=\"Escrit per\" \/>\n\t<meta name=\"twitter:data1\" content=\"movingitadm\" \/>\n\t<meta name=\"twitter:label2\" content=\"Temps estimat de lectura\" \/>\n\t<meta name=\"twitter:data2\" content=\"2 minuts\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/www.moving-it.net\/ca\/configurar-ssh-router-cisco\/#article\",\"isPartOf\":{\"@id\":\"https:\/\/www.moving-it.net\/ca\/configurar-ssh-router-cisco\/\"},\"author\":{\"name\":\"movingitadm\",\"@id\":\"https:\/\/www.moving-it.net\/ca\/#\/schema\/person\/3839560932bba6035804db55523327fd\"},\"headline\":\"Com configurar SSH a un router Cisco?\",\"datePublished\":\"2016-03-18T12:34:33+00:00\",\"dateModified\":\"2018-01-20T09:15:34+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/www.moving-it.net\/ca\/configurar-ssh-router-cisco\/\"},\"wordCount\":395,\"commentCount\":0,\"publisher\":{\"@id\":\"https:\/\/www.moving-it.net\/ca\/#organization\"},\"image\":{\"@id\":\"https:\/\/www.moving-it.net\/ca\/configurar-ssh-router-cisco\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/www.moving-it.net\/wp-content\/uploads\/2016\/03\/ssh.png\",\"articleSection\":[\"Cisco\",\"Networking\",\"Seguretat\"],\"inLanguage\":\"ca\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\/\/www.moving-it.net\/ca\/configurar-ssh-router-cisco\/#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.moving-it.net\/ca\/configurar-ssh-router-cisco\/\",\"url\":\"https:\/\/www.moving-it.net\/ca\/configurar-ssh-router-cisco\/\",\"name\":\"Com configurar SSH a un router Cisco? - Moving-IT\",\"isPartOf\":{\"@id\":\"https:\/\/www.moving-it.net\/ca\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\/\/www.moving-it.net\/ca\/configurar-ssh-router-cisco\/#primaryimage\"},\"image\":{\"@id\":\"https:\/\/www.moving-it.net\/ca\/configurar-ssh-router-cisco\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/www.moving-it.net\/wp-content\/uploads\/2016\/03\/ssh.png\",\"datePublished\":\"2016-03-18T12:34:33+00:00\",\"dateModified\":\"2018-01-20T09:15:34+00:00\",\"description\":\"En aquest article us ajudem a configurar l'acc\u00e9s SSH per als routers Cisco. 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