What is an SSL and how does it works ?<\/h2>\n\n- SSL (Secure Sockets Layer)<\/a>\u00a0is the standard security technology for establishing an encrypted link between a web server and a browser.<\/li>\n
- This link ensures that all data passed between the web server and browsers remain private and integral. Certificado SSL<\/a><\/li>\n<\/ul>\n<\/div>\n<\/div>\n<\/div>\n\n\n
Working of SSL:<\/h2>\n<\/div>\n<\/div>\n\n![\"ssl\"](\"https:\/\/cdn.wikitechy.com\/interview-questions\/networking\/ssl.jpg\")
<\/div>\n<\/div>\n\n\n\n- An end-user asks their browser to make a secure connection to a website<\/li>\n
- The browser obtains the\u00a0IP address<\/a>\u00a0of the site from a DNS server then requests a secure connection to the website.<\/li>\n
- To initiate this secure connection, the browser requests that the server identifies itself by sending a copy of its\u00a0SSL certificate<\/a>\u00a0to the browser.<\/li>\n
- The browser checks the certificate to ensure:\n
\n- That it is signed by a trusted CA.<\/li>\n
- That it is valid – that it has not expired or been revoked.<\/li>\n
- That it confirms to required security standards on key lengths and other items.<\/li>\n
- That the domain listed on the certificate matches the domain that was requested by the user.<\/li>\n<\/ul>\n<\/li>\n
- When the browser confirms that the website can be trusted, it creates a symmetric\u00a0session key<\/a>\u00a0which it encrypts with the public key in the website’s certificate. The session key is then sent to the web server.<\/li>\n
- The web server uses its private key to decrypt the symmetric session key.<\/li>\n
- The server sends back an acknowledgement that is\u00a0encrypted<\/a>\u00a0with the session key.<\/li>\n
- From now on, all data transmitted between the server and the browser is encrypted and secure.<\/li>\n<\/ul>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"
Answer : SSL (Secure Sockets Layer) is the standard security technology…<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"passster_activate_protection":false,"passster_protect_child_pages":"","passster_protection_type":"password","passster_password":"","passster_activate_overwrite_defaults":"","passster_headline":"","passster_instruction":"","passster_placeholder":"","passster_button":"","passster_id":"","passster_activate_misc_settings":"","passster_redirect_url":"","passster_hide":"no","passster_area_shortcode":"","gtb_hide_title":false,"gtb_wrap_title":false,"gtb_class_title":"","gtb_remove_headerfooter":false,"footnotes":""},"categories":[4590],"tags":[195,201,4609,360,221,203,199,363,4606,4933,205,222,362,4923,4922,4929,4917,4925,4928,4916,196,212,213,710,207,4605,366,204,217,288,367,483,206,4938,4937,4941,4926,4931,4932,4936,4934,4921,4919,4935,4918,4927,4939,4942,4608,200,197,4607,4940,4924,4920,4930],"class_list":["post-772","post","type-post","status-publish","format-standard","hentry","category-networking","tag-accenture-interview-questions-and-answers","tag-allstate-solutions-pvt-ltd-interview-questions-and-answers","tag-applied-mate-interview-questions-and-answers","tag-atos-interview-questions-and-answers","tag-bharti-airtel-interview-questions-and-answers","tag-capgemini-interview-questions-and-answers","tag-casting-networks-india-pvt-limited-interview-questions-and-answers","tag-ciena-corporation-interview-questions-and-answers","tag-css-corp-pvt-ltd-interview-questions-and-answers","tag-define-ssl","tag-dell-international-services-india-pvt-ltd-interview-questions-and-answers","tag-flipkart-interview-questions-and-answers","tag-hcl-technologies-interview-questions-and-answers","tag-how-does-ssl-work","tag-how-https-works-step-by-step","tag-how-ssl-certificate-works-between-client-and-server","tag-how-ssl-certificates-work-diagram","tag-how-ssl-hand","tag-how-ssl-works","tag-how-ssl-works-step-by-step","tag-ibm-interview-questions-and-answers","tag-indecomm-global-services-interview-questions-and-answers","tag-infosys-technologies-interview-questions-and-answers","tag-mavenir-interview-questions-and-answers","tag-mphasis-interview-questions-and-answers","tag-ncr-corporation-interview-questions-and-answers","tag-netapp-interview-questions-and-answers","tag-oracle-corporation-interview-questions-and-answers","tag-peoplestrong-interview-questions-and-answers","tag-r-systems-interview-questions-and-answers","tag-rbs-india-development-centre-pvt-ltd-interview-questions-and-answers","tag-reliance-industries-ltd-interview-questions-and-answers","tag-sap-labs-india-pvt-ltd-interview-questions-and-answers","tag-secure-socket-layer","tag-secure-sockets-layer","tag-secure-sockets-layer-ssl","tag-shake-works","tag-ssl","tag-ssl-certificate","tag-ssl-definition","tag-ssl-encryption","tag-ssl-handshake","tag-ssl-https","tag-ssl-key","tag-ssl-protocol","tag-ssl-protocol-stack","tag-ssl-security","tag-ssls","tag-tata-communications-interview-questions-and-answers","tag-tech-mahindra-interview-questions-and-answers","tag-unitedhealth-group-interview-questions-and-answers","tag-virtela-interview-questions-and-answers","tag-what-does-ssl-mean","tag-what-is-ssl","tag-what-is-ssl-certificate","tag-what-is-ssl-how-does-it-work"],"yoast_head":"\n
What is an SSL and how does it works ? - Networking - Wikitechy<\/title>\n<meta name=\"description\" content=\"What is an SSL and how does it works ? - SSL (Secure Sockets Layer) is the standard security technology for establishing an encrypted link between a web server\" \/>\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.wikitechy.com\/interview-questions\/networking\/what-is-an-ssl-and-how-does-it-works\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"What is an SSL and how does it works ? - Networking - Wikitechy\" \/>\n<meta property=\"og:description\" content=\"What is an SSL and how does it works ? - SSL (Secure Sockets Layer) is the standard security technology for establishing an encrypted link between a web server\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.wikitechy.com\/interview-questions\/networking\/what-is-an-ssl-and-how-does-it-works\/\" \/>\n<meta property=\"og:site_name\" content=\"Wikitechy\" \/>\n<meta property=\"article:published_time\" content=\"2021-07-17T19:24:49+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2021-09-11T07:03:59+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/cdn.wikitechy.com\/interview-questions\/networking\/ssl.jpg\" \/>\n<meta name=\"author\" content=\"Editor\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Editor\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"2 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.wikitechy.com\/interview-questions\/networking\/what-is-an-ssl-and-how-does-it-works\/\",\"url\":\"https:\/\/www.wikitechy.com\/interview-questions\/networking\/what-is-an-ssl-and-how-does-it-works\/\",\"name\":\"What is an SSL and how does it works ? 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Working of SSL:<\/h2>\n<\/div>\n<\/div>\n\n<\/div>\n<\/div>\n\n\n\n- An end-user asks their browser to make a secure connection to a website<\/li>\n
- The browser obtains the\u00a0IP address<\/a>\u00a0of the site from a DNS server then requests a secure connection to the website.<\/li>\n
- To initiate this secure connection, the browser requests that the server identifies itself by sending a copy of its\u00a0SSL certificate<\/a>\u00a0to the browser.<\/li>\n
- The browser checks the certificate to ensure:\n
\n- That it is signed by a trusted CA.<\/li>\n
- That it is valid – that it has not expired or been revoked.<\/li>\n
- That it confirms to required security standards on key lengths and other items.<\/li>\n
- That the domain listed on the certificate matches the domain that was requested by the user.<\/li>\n<\/ul>\n<\/li>\n
- When the browser confirms that the website can be trusted, it creates a symmetric\u00a0session key<\/a>\u00a0which it encrypts with the public key in the website’s certificate. The session key is then sent to the web server.<\/li>\n
- The web server uses its private key to decrypt the symmetric session key.<\/li>\n
- The server sends back an acknowledgement that is\u00a0encrypted<\/a>\u00a0with the session key.<\/li>\n
- From now on, all data transmitted between the server and the browser is encrypted and secure.<\/li>\n<\/ul>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"
Answer : SSL (Secure Sockets Layer) is the standard security technology…<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"passster_activate_protection":false,"passster_protect_child_pages":"","passster_protection_type":"password","passster_password":"","passster_activate_overwrite_defaults":"","passster_headline":"","passster_instruction":"","passster_placeholder":"","passster_button":"","passster_id":"","passster_activate_misc_settings":"","passster_redirect_url":"","passster_hide":"no","passster_area_shortcode":"","gtb_hide_title":false,"gtb_wrap_title":false,"gtb_class_title":"","gtb_remove_headerfooter":false,"footnotes":""},"categories":[4590],"tags":[195,201,4609,360,221,203,199,363,4606,4933,205,222,362,4923,4922,4929,4917,4925,4928,4916,196,212,213,710,207,4605,366,204,217,288,367,483,206,4938,4937,4941,4926,4931,4932,4936,4934,4921,4919,4935,4918,4927,4939,4942,4608,200,197,4607,4940,4924,4920,4930],"class_list":["post-772","post","type-post","status-publish","format-standard","hentry","category-networking","tag-accenture-interview-questions-and-answers","tag-allstate-solutions-pvt-ltd-interview-questions-and-answers","tag-applied-mate-interview-questions-and-answers","tag-atos-interview-questions-and-answers","tag-bharti-airtel-interview-questions-and-answers","tag-capgemini-interview-questions-and-answers","tag-casting-networks-india-pvt-limited-interview-questions-and-answers","tag-ciena-corporation-interview-questions-and-answers","tag-css-corp-pvt-ltd-interview-questions-and-answers","tag-define-ssl","tag-dell-international-services-india-pvt-ltd-interview-questions-and-answers","tag-flipkart-interview-questions-and-answers","tag-hcl-technologies-interview-questions-and-answers","tag-how-does-ssl-work","tag-how-https-works-step-by-step","tag-how-ssl-certificate-works-between-client-and-server","tag-how-ssl-certificates-work-diagram","tag-how-ssl-hand","tag-how-ssl-works","tag-how-ssl-works-step-by-step","tag-ibm-interview-questions-and-answers","tag-indecomm-global-services-interview-questions-and-answers","tag-infosys-technologies-interview-questions-and-answers","tag-mavenir-interview-questions-and-answers","tag-mphasis-interview-questions-and-answers","tag-ncr-corporation-interview-questions-and-answers","tag-netapp-interview-questions-and-answers","tag-oracle-corporation-interview-questions-and-answers","tag-peoplestrong-interview-questions-and-answers","tag-r-systems-interview-questions-and-answers","tag-rbs-india-development-centre-pvt-ltd-interview-questions-and-answers","tag-reliance-industries-ltd-interview-questions-and-answers","tag-sap-labs-india-pvt-ltd-interview-questions-and-answers","tag-secure-socket-layer","tag-secure-sockets-layer","tag-secure-sockets-layer-ssl","tag-shake-works","tag-ssl","tag-ssl-certificate","tag-ssl-definition","tag-ssl-encryption","tag-ssl-handshake","tag-ssl-https","tag-ssl-key","tag-ssl-protocol","tag-ssl-protocol-stack","tag-ssl-security","tag-ssls","tag-tata-communications-interview-questions-and-answers","tag-tech-mahindra-interview-questions-and-answers","tag-unitedhealth-group-interview-questions-and-answers","tag-virtela-interview-questions-and-answers","tag-what-does-ssl-mean","tag-what-is-ssl","tag-what-is-ssl-certificate","tag-what-is-ssl-how-does-it-work"],"yoast_head":"\n
What is an SSL and how does it works ? - Networking - Wikitechy<\/title>\n<meta name=\"description\" content=\"What is an SSL and how does it works ? - SSL (Secure Sockets Layer) is the standard security technology for establishing an encrypted link between a web server\" \/>\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.wikitechy.com\/interview-questions\/networking\/what-is-an-ssl-and-how-does-it-works\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"What is an SSL and how does it works ? - Networking - Wikitechy\" \/>\n<meta property=\"og:description\" content=\"What is an SSL and how does it works ? - SSL (Secure Sockets Layer) is the standard security technology for establishing an encrypted link between a web server\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.wikitechy.com\/interview-questions\/networking\/what-is-an-ssl-and-how-does-it-works\/\" \/>\n<meta property=\"og:site_name\" content=\"Wikitechy\" \/>\n<meta property=\"article:published_time\" content=\"2021-07-17T19:24:49+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2021-09-11T07:03:59+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/cdn.wikitechy.com\/interview-questions\/networking\/ssl.jpg\" \/>\n<meta name=\"author\" content=\"Editor\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Editor\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"2 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.wikitechy.com\/interview-questions\/networking\/what-is-an-ssl-and-how-does-it-works\/\",\"url\":\"https:\/\/www.wikitechy.com\/interview-questions\/networking\/what-is-an-ssl-and-how-does-it-works\/\",\"name\":\"What is an SSL and how does it works ? 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<\/div>\n<\/div>\n- \n
- An end-user asks their browser to make a secure connection to a website<\/li>\n
- The browser obtains the\u00a0IP address<\/a>\u00a0of the site from a DNS server then requests a secure connection to the website.<\/li>\n
- To initiate this secure connection, the browser requests that the server identifies itself by sending a copy of its\u00a0SSL certificate<\/a>\u00a0to the browser.<\/li>\n
- The browser checks the certificate to ensure:\n
- \n
- That it is signed by a trusted CA.<\/li>\n
- That it is valid – that it has not expired or been revoked.<\/li>\n
- That it confirms to required security standards on key lengths and other items.<\/li>\n
- That the domain listed on the certificate matches the domain that was requested by the user.<\/li>\n<\/ul>\n<\/li>\n
- When the browser confirms that the website can be trusted, it creates a symmetric\u00a0session key<\/a>\u00a0which it encrypts with the public key in the website’s certificate. The session key is then sent to the web server.<\/li>\n
- The web server uses its private key to decrypt the symmetric session key.<\/li>\n
- The server sends back an acknowledgement that is\u00a0encrypted<\/a>\u00a0with the session key.<\/li>\n
- From now on, all data transmitted between the server and the browser is encrypted and secure.<\/li>\n<\/ul>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"
Answer : SSL (Secure Sockets Layer) is the standard security technology…<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"passster_activate_protection":false,"passster_protect_child_pages":"","passster_protection_type":"password","passster_password":"","passster_activate_overwrite_defaults":"","passster_headline":"","passster_instruction":"","passster_placeholder":"","passster_button":"","passster_id":"","passster_activate_misc_settings":"","passster_redirect_url":"","passster_hide":"no","passster_area_shortcode":"","gtb_hide_title":false,"gtb_wrap_title":false,"gtb_class_title":"","gtb_remove_headerfooter":false,"footnotes":""},"categories":[4590],"tags":[195,201,4609,360,221,203,199,363,4606,4933,205,222,362,4923,4922,4929,4917,4925,4928,4916,196,212,213,710,207,4605,366,204,217,288,367,483,206,4938,4937,4941,4926,4931,4932,4936,4934,4921,4919,4935,4918,4927,4939,4942,4608,200,197,4607,4940,4924,4920,4930],"class_list":["post-772","post","type-post","status-publish","format-standard","hentry","category-networking","tag-accenture-interview-questions-and-answers","tag-allstate-solutions-pvt-ltd-interview-questions-and-answers","tag-applied-mate-interview-questions-and-answers","tag-atos-interview-questions-and-answers","tag-bharti-airtel-interview-questions-and-answers","tag-capgemini-interview-questions-and-answers","tag-casting-networks-india-pvt-limited-interview-questions-and-answers","tag-ciena-corporation-interview-questions-and-answers","tag-css-corp-pvt-ltd-interview-questions-and-answers","tag-define-ssl","tag-dell-international-services-india-pvt-ltd-interview-questions-and-answers","tag-flipkart-interview-questions-and-answers","tag-hcl-technologies-interview-questions-and-answers","tag-how-does-ssl-work","tag-how-https-works-step-by-step","tag-how-ssl-certificate-works-between-client-and-server","tag-how-ssl-certificates-work-diagram","tag-how-ssl-hand","tag-how-ssl-works","tag-how-ssl-works-step-by-step","tag-ibm-interview-questions-and-answers","tag-indecomm-global-services-interview-questions-and-answers","tag-infosys-technologies-interview-questions-and-answers","tag-mavenir-interview-questions-and-answers","tag-mphasis-interview-questions-and-answers","tag-ncr-corporation-interview-questions-and-answers","tag-netapp-interview-questions-and-answers","tag-oracle-corporation-interview-questions-and-answers","tag-peoplestrong-interview-questions-and-answers","tag-r-systems-interview-questions-and-answers","tag-rbs-india-development-centre-pvt-ltd-interview-questions-and-answers","tag-reliance-industries-ltd-interview-questions-and-answers","tag-sap-labs-india-pvt-ltd-interview-questions-and-answers","tag-secure-socket-layer","tag-secure-sockets-layer","tag-secure-sockets-layer-ssl","tag-shake-works","tag-ssl","tag-ssl-certificate","tag-ssl-definition","tag-ssl-encryption","tag-ssl-handshake","tag-ssl-https","tag-ssl-key","tag-ssl-protocol","tag-ssl-protocol-stack","tag-ssl-security","tag-ssls","tag-tata-communications-interview-questions-and-answers","tag-tech-mahindra-interview-questions-and-answers","tag-unitedhealth-group-interview-questions-and-answers","tag-virtela-interview-questions-and-answers","tag-what-does-ssl-mean","tag-what-is-ssl","tag-what-is-ssl-certificate","tag-what-is-ssl-how-does-it-work"],"yoast_head":"\n
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- To initiate this secure connection, the browser requests that the server identifies itself by sending a copy of its\u00a0SSL certificate<\/a>\u00a0to the browser.<\/li>\n