{"id":414,"date":"2022-03-10T14:30:00","date_gmt":"2022-03-10T13:30:00","guid":{"rendered":"https:\/\/blog.beevoip.it\/?p=414"},"modified":"2022-03-15T14:23:39","modified_gmt":"2022-03-15T13:23:39","slug":"protocollo-sip-come-posso-capire-cosa-succede-fare-debug-e-troubleshooting","status":"publish","type":"post","link":"https:\/\/www.beevoip.it\/blog\/protocollo-sip-come-posso-capire-cosa-succede-fare-debug-e-troubleshooting\/","title":{"rendered":"SIP: come capisco cosa succede?"},"content":{"rendered":"\n<p>Come faccio ad approfondire una problematica che ho sulle telefonate? Come analizzo gli eventi su una chiamata VoIP?<\/p>\n\n\n\n<p>Lo strumento che proponiamo \u00e8 la cattura del traffico VoIP con successiva analisi tramite il software Wireshark.<\/p>\n\n\n\n<p>Per cominciare, la cattura del traffico. Quasi sicuramente, sul server VoIP, c&#8217;\u00e8 la possibilita di usare il comando &#8220;tcpdump&#8221; per catturare il traffico di rete.<\/p>\n\n\n\n<p>Con un &#8220;tcpdump port 5060 -w \/tmp\/cattura.pcap&#8221; creiamo un file cattura.pcap, nel quale scriviamo tutto il traffico intercettato sulla porta 5060.<\/p>\n\n\n\n<p>La stessa operazione si pu\u00f2 fare dall&#8217;interfaccia web di molti apparati SIP, firewall, router, etc.<\/p>\n\n\n\n<p>Il risultato importante \u00e8 ottenere un file con il tracciato delle comunicazioni di rete.<\/p>\n\n\n\n<p>Una volta ottenuto il file, installiamo l&#8217;applicazione <a rel=\"noreferrer noopener\" href=\"https:\/\/www.wireshark.org\/download.html\" target=\"_blank\">Wireshark<\/a> ed apriamo il file. Inizialmente si presenta una schermata pressoch\u00e9 illeggibile, ma niente paura: con poche semplici mosse possiamo trovare la rappresentazione grafica di ci\u00f2 che avviene nei sistemi.<\/p>\n\n\n\n<p>Infatti, basta andare nel menu &#8220;Telefonia&#8221; e selezionare &#8220;Flussi SIP&#8221;.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"321\" src=\"https:\/\/blog.beevoip.it\/wp-content\/uploads\/2022\/03\/wireshark_flussi_sip-1024x321.jpg\" alt=\"Analisi flussi SIP wireshark\" class=\"wp-image-415\" srcset=\"https:\/\/www.beevoip.it\/blog\/wp-content\/uploads\/2022\/03\/wireshark_flussi_sip-1024x321.jpg 1024w, https:\/\/www.beevoip.it\/blog\/wp-content\/uploads\/2022\/03\/wireshark_flussi_sip-300x94.jpg 300w, https:\/\/www.beevoip.it\/blog\/wp-content\/uploads\/2022\/03\/wireshark_flussi_sip-768x241.jpg 768w, https:\/\/www.beevoip.it\/blog\/wp-content\/uploads\/2022\/03\/wireshark_flussi_sip-696x218.jpg 696w, https:\/\/www.beevoip.it\/blog\/wp-content\/uploads\/2022\/03\/wireshark_flussi_sip-1068x335.jpg 1068w, https:\/\/www.beevoip.it\/blog\/wp-content\/uploads\/2022\/03\/wireshark_flussi_sip.jpg 1195w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><figcaption>Wireshark: flussi SIP<\/figcaption><\/figure>\n\n\n\n<p>Qui dovremmo trovare la nostra chiamata. Gi\u00e0 se non troviamo la chiamata fatta dal nostro numero al numero da noi composto, abbiamo accertato che i pacchetti SIP non partono\/arrivano (a seconda di dove abbiamo fatto la cattura).<\/p>\n\n\n\n<p>Una volta individuata la chiamata che vogliamo analizzare, va selezionata e clicchiamo su &#8220;Sequenza del flusso&#8221; in basso a destra.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"683\" height=\"336\" src=\"https:\/\/blog.beevoip.it\/wp-content\/uploads\/2022\/03\/wireshark_flusso_SIP_INVITE.jpg\" alt=\"Flusso della chiamata Wireshark metodo Cancel\" class=\"wp-image-416\" srcset=\"https:\/\/www.beevoip.it\/blog\/wp-content\/uploads\/2022\/03\/wireshark_flusso_SIP_INVITE.jpg 683w, https:\/\/www.beevoip.it\/blog\/wp-content\/uploads\/2022\/03\/wireshark_flusso_SIP_INVITE-300x148.jpg 300w, https:\/\/www.beevoip.it\/blog\/wp-content\/uploads\/2022\/03\/wireshark_flusso_SIP_INVITE-324x160.jpg 324w, https:\/\/www.beevoip.it\/blog\/wp-content\/uploads\/2022\/03\/wireshark_flusso_SIP_INVITE-533x261.jpg 533w\" sizes=\"auto, (max-width: 683px) 100vw, 683px\" \/><figcaption>Wireshark: flusso SIP di una chiamata<\/figcaption><\/figure>\n\n\n\n<p>Ci compaiono i pacchetti che fanno parte di un determinato dialogo SIP. Per esempio, nell&#8217;immagine di cui sopra, vediamo che la chiamata \u00e8 stata annullata dal chiamante (metodo CANCEL).<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"472\" height=\"311\" src=\"https:\/\/blog.beevoip.it\/wp-content\/uploads\/2022\/03\/wireshark_flusso_SIP_BYE.jpg\" alt=\"Flusso della chiamata SIP Whireshark metodo BYE\" class=\"wp-image-417\" srcset=\"https:\/\/www.beevoip.it\/blog\/wp-content\/uploads\/2022\/03\/wireshark_flusso_SIP_BYE.jpg 472w, https:\/\/www.beevoip.it\/blog\/wp-content\/uploads\/2022\/03\/wireshark_flusso_SIP_BYE-300x198.jpg 300w\" sizes=\"auto, (max-width: 472px) 100vw, 472px\" \/><figcaption>Wireshark: flusso SIP di una chiamata<\/figcaption><\/figure>\n\n\n\n<p>In questo caso, invece, vediamo che la chiamata \u00e8 terminata, perch\u00e8 l&#8217;utente che l&#8217;ha iniziata ha riagganciato (metodo BYE).<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"639\" height=\"324\" src=\"https:\/\/blog.beevoip.it\/wp-content\/uploads\/2022\/03\/wireshark_flusso_SIP_480.jpg\" alt=\"Flusso di una chiamata SIP Wireshark errore 480 Temporarily Unavailable \" class=\"wp-image-418\" srcset=\"https:\/\/www.beevoip.it\/blog\/wp-content\/uploads\/2022\/03\/wireshark_flusso_SIP_480.jpg 639w, https:\/\/www.beevoip.it\/blog\/wp-content\/uploads\/2022\/03\/wireshark_flusso_SIP_480-300x152.jpg 300w\" sizes=\"auto, (max-width: 639px) 100vw, 639px\" \/><figcaption>Wireshark: flusso SIP di una chiamata<\/figcaption><\/figure>\n\n\n\n<p>In questo caso, invece, vediamo che la richiesta \u00e8 andata in errore 480 Temporarily Unavailable.<\/p>\n\n\n\n<p>Abbiamo cos\u00ec visto uno strumento che ci fa vedere, cosa succede nel dialogo SIP, e da qui possiamo approfondire le nostre indagini. Nel caso sia necessario, si pu\u00f2 contattare il provider dei servizi VoIP. Oppure, se si tratta di una problematica interna dell&#8217;infrastruttura, si pu\u00f2 analizzare in maniera pi\u00f9 dettagliata il singolo pacchetto SIP, per trovare eventuali incongruenze.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Come faccio ad approfondire una problematica che ho sulle telefonate? Come analizzo gli eventi su una chiamata VoIP? Lo strumento che proponiamo \u00e8 la cattura del traffico VoIP con successiva analisi tramite il software Wireshark. Per cominciare, la cattura del traffico. Quasi sicuramente, sul server VoIP, c&#8217;\u00e8 la possibilita di usare il comando &#8220;tcpdump&#8221; per [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":420,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"footnotes":""},"categories":[7],"tags":[],"class_list":{"0":"post-414","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-voip"},"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.5 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>SIP: come capisco cosa succede? - Blog Beevoip<\/title>\n<meta name=\"description\" content=\"Lo strumento che proponiamo \u00e8 la cattura del traffico VoIP con successiva analisi tramite il software Wireshark.\" \/>\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.beevoip.it\/blog\/protocollo-sip-come-posso-capire-cosa-succede-fare-debug-e-troubleshooting\/\" \/>\n<meta property=\"og:locale\" content=\"it_IT\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"SIP: come capisco cosa succede? - Blog Beevoip\" \/>\n<meta property=\"og:description\" content=\"Lo strumento che proponiamo \u00e8 la cattura del traffico VoIP con successiva analisi tramite il software Wireshark.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.beevoip.it\/blog\/protocollo-sip-come-posso-capire-cosa-succede-fare-debug-e-troubleshooting\/\" \/>\n<meta property=\"og:site_name\" content=\"Blog Beevoip\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/beevoip\/\" \/>\n<meta property=\"article:published_time\" content=\"2022-03-10T13:30:00+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2022-03-15T13:23:39+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.beevoip.it\/blog\/wp-content\/uploads\/2022\/03\/Problema-SIP.png\" \/>\n\t<meta property=\"og:image:width\" content=\"1920\" \/>\n\t<meta property=\"og:image:height\" content=\"1080\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/png\" \/>\n<meta name=\"author\" content=\"Volodymyr Ivaniuta\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Scritto da\" \/>\n\t<meta name=\"twitter:data1\" content=\"Volodymyr Ivaniuta\" \/>\n\t<meta name=\"twitter:label2\" content=\"Tempo di lettura stimato\" \/>\n\t<meta name=\"twitter:data2\" content=\"3 minuti\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/www.beevoip.it\\\/blog\\\/protocollo-sip-come-posso-capire-cosa-succede-fare-debug-e-troubleshooting\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.beevoip.it\\\/blog\\\/protocollo-sip-come-posso-capire-cosa-succede-fare-debug-e-troubleshooting\\\/\"},\"author\":{\"name\":\"Volodymyr Ivaniuta\",\"@id\":\"https:\\\/\\\/www.beevoip.it\\\/blog\\\/#\\\/schema\\\/person\\\/9800e817cc652fda0257366ddca7217e\"},\"headline\":\"SIP: come capisco cosa succede?\",\"datePublished\":\"2022-03-10T13:30:00+00:00\",\"dateModified\":\"2022-03-15T13:23:39+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/www.beevoip.it\\\/blog\\\/protocollo-sip-come-posso-capire-cosa-succede-fare-debug-e-troubleshooting\\\/\"},\"wordCount\":363,\"commentCount\":0,\"publisher\":{\"@id\":\"https:\\\/\\\/www.beevoip.it\\\/blog\\\/#organization\"},\"image\":{\"@id\":\"https:\\\/\\\/www.beevoip.it\\\/blog\\\/protocollo-sip-come-posso-capire-cosa-succede-fare-debug-e-troubleshooting\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/www.beevoip.it\\\/blog\\\/wp-content\\\/uploads\\\/2022\\\/03\\\/Problema-SIP.png\",\"articleSection\":[\"Voip\"],\"inLanguage\":\"it-IT\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\\\/\\\/www.beevoip.it\\\/blog\\\/protocollo-sip-come-posso-capire-cosa-succede-fare-debug-e-troubleshooting\\\/#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/www.beevoip.it\\\/blog\\\/protocollo-sip-come-posso-capire-cosa-succede-fare-debug-e-troubleshooting\\\/\",\"url\":\"https:\\\/\\\/www.beevoip.it\\\/blog\\\/protocollo-sip-come-posso-capire-cosa-succede-fare-debug-e-troubleshooting\\\/\",\"name\":\"SIP: come capisco cosa succede? 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