{"id":6574,"date":"2022-05-31T09:23:32","date_gmt":"2022-05-31T09:23:32","guid":{"rendered":"https:\/\/blog.ssdnodes.com\/blog\/?p=6574"},"modified":"2025-07-16T15:04:50","modified_gmt":"2025-07-16T15:04:50","slug":"ssl-server-certificates","status":"publish","type":"post","link":"https:\/\/www.ssdnodes.com\/blog\/ssl-server-certificates\/","title":{"rendered":"What are SSL Server Certificates and How Do They Protect my Website?"},"content":{"rendered":"<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-6579 size-full\" src=\"https:\/\/www.ssdnodes.com\/wp-content\/uploads\/2022\/05\/Self-Signed-vs-CA-certificate.jpg\" alt=\"web hosting wordpress\" width=\"700\" height=\"400\" srcset=\"https:\/\/www.ssdnodes.com\/wp-content\/uploads\/2022\/05\/Self-Signed-vs-CA-certificate.jpg 700w, https:\/\/www.ssdnodes.com\/wp-content\/uploads\/2022\/05\/Self-Signed-vs-CA-certificate-300x171.jpg 300w\" sizes=\"auto, (max-width: 700px) 100vw, 700px\" \/><\/p>\n<p><i><span style=\"font-weight: 400;\">~ Never take any risks when it comes to your server\u2019s security!<\/span><\/i><\/p>\n<p><b>W<\/b><span style=\"font-weight: 400;\">hile your business will surely offer more and more online services and transactions, internet security becomes both a priority and a necessity for your customers\u2019 online transactions, to ensure that sensitive information \u2013 such as a credit card number and personal information \u2013 are only being transmitted to legitimate online businesses like yours.<\/span><\/p>\n<p>&nbsp;<\/p>\n<p><span style=\"font-weight: 400;\">In order to keep customer information private and secure, you will need to add SSL certificates to your website, which are an essential component of the data encryption process that makes internet transactions secure.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">In other terms, SSL are digital passports that provide authentication to protect the confidentiality and integrity of website communication with browsers.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">The SSL certificate's job is to initiate secure sessions with the user\u2019s browser via the secure sockets layer (SSL) protocol. This secure connection cannot be established without the SSL certificate, which digitally connects company information to a cryptographic key.<\/span><\/p>\n<h2><span style=\"font-weight: 400;\">What Effect Do SSL certificates Have on Your Business?<\/span><\/h2>\n<p><span style=\"font-weight: 400;\">There are many benefits to using SSL certificates. Namely, SSL-based websites can:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\"><span style=\"font-weight: 400;\">Utilize HTTPs, which optimizes SEO and elicits a better rank in the search results of search engines such as Google.<\/span><\/li>\n<li style=\"font-weight: 400;\"><span style=\"font-weight: 400;\">Create safer experiences for customers, because data they submit is encrypted before it is transmitted through the internet.<\/span><\/li>\n<li style=\"font-weight: 400;\"><span style=\"font-weight: 400;\">Build customer trust and improve conversions.<\/span><\/li>\n<li style=\"font-weight: 400;\"><span style=\"font-weight: 400;\">Protect both the customer and internal data.<\/span><\/li>\n<li style=\"font-weight: 400;\"><span style=\"font-weight: 400;\">Encrypt browser-to-server and server-to-server communication.<\/span><\/li>\n<li style=\"font-weight: 400;\"><span style=\"font-weight: 400;\">Increase security of your mobile and cloud apps.<\/span><\/li>\n<\/ul>\n<h2><span style=\"font-weight: 400;\">Technicalities anyone?<\/span><\/h2>\n<p>Here is how SSL certificates work:<\/p>\n<ol>\n<li style=\"font-weight: 400;\"><span style=\"font-weight: 400;\">A browser or server attempts to connect to a website (i.e. a web server) secured with SSL. The browser\/server requests that the web server identify itself.<\/span><\/li>\n<li style=\"font-weight: 400;\"><span style=\"font-weight: 400;\">The web server sends the browser\/server a copy of its SSL certificate.<\/span><\/li>\n<li style=\"font-weight: 400;\"><span style=\"font-weight: 400;\">The browser\/server checks to see whether or not it trusts the SSL certificate.\u00a0<\/span><\/li>\n<li style=\"font-weight: 400;\"><span style=\"font-weight: 400;\">If so, it sends a message to the web server.<\/span><\/li>\n<li style=\"font-weight: 400;\"><span style=\"font-weight: 400;\">The web server sends back a digitally signed acknowledgment to start an SSL encrypted session.<\/span><\/li>\n<li style=\"font-weight: 400;\"><span style=\"font-weight: 400;\">Encrypted data is shared between the browser\/server and the web server.<\/span><\/li>\n<\/ol>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-6576\" src=\"https:\/\/www.ssdnodes.com\/wp-content\/uploads\/2022\/05\/ca-technicalities-1024x654.png\" alt=\"ssd web hosting\" width=\"700\" height=\"447\" srcset=\"https:\/\/www.ssdnodes.com\/wp-content\/uploads\/2022\/05\/ca-technicalities-1024x654.png 1024w, https:\/\/www.ssdnodes.com\/wp-content\/uploads\/2022\/05\/ca-technicalities-300x191.png 300w, https:\/\/www.ssdnodes.com\/wp-content\/uploads\/2022\/05\/ca-technicalities-768x490.png 768w, https:\/\/www.ssdnodes.com\/wp-content\/uploads\/2022\/05\/ca-technicalities.png 1280w\" sizes=\"auto, (max-width: 700px) 100vw, 700px\" \/><\/p>\n<h2><span style=\"font-weight: 400;\">Self-Signed Certificate vs CA Certificate: What\u2019s the Difference?<\/span><\/h2>\n<p><span style=\"font-weight: 400;\">When using a self-signed certificate, you\u2019re essentially vouching for your own identity. It\u2019s like writing \u201cI have graduated\u201d on a piece of paper and considering it your official graduation certificate. While you might be excellent in your academics, people aren\u2019t going to trust your self-created certificate! They\u2019d want the document to be issued and signed by an official institution such as a college or university.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">In much the same way, no browsers, email clients, or operating systems are going to trust digital certificates that are signed by the entities they\u2019re designed to validate. Hence, why they don\u2019t show any of the above-mentioned trust indicators for self-signed certificates.<\/span><\/p>\n<p><b><i>But it gets worse. <\/i><\/b><span style=\"font-weight: 400;\">Not only will browsers not trust a self-signed certificate, but they\u2019ll even display a security warning page with error messages like the one shown below, this means that your website visitors must manually click on the \u201c<\/span><i><span style=\"font-weight: 400;\">Accept Risk<\/span><\/i><span style=\"font-weight: 400;\">\u201d button to open your site \u2014 and that can drive them away.<\/span><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-6578\" src=\"https:\/\/www.ssdnodes.com\/wp-content\/uploads\/2022\/05\/self-signed-screen-splash.jpg\" alt=\"vps for linux\" width=\"700\" height=\"470\" srcset=\"https:\/\/www.ssdnodes.com\/wp-content\/uploads\/2022\/05\/self-signed-screen-splash.jpg 1200w, https:\/\/www.ssdnodes.com\/wp-content\/uploads\/2022\/05\/self-signed-screen-splash-300x201.jpg 300w, https:\/\/www.ssdnodes.com\/wp-content\/uploads\/2022\/05\/self-signed-screen-splash-1024x687.jpg 1024w, https:\/\/www.ssdnodes.com\/wp-content\/uploads\/2022\/05\/self-signed-screen-splash-768x515.jpg 768w\" sizes=\"auto, (max-width: 700px) 100vw, 700px\" \/><\/p>\n<p><b><i>The difference between a self-signed and a CA certificate is the issuer of the certificate.<\/i><\/b><span style=\"font-weight: 400;\"> A self-signed certificate is created, signed, and issued by the subject of the certificate (the entity it is issued to), while a CA certificate is created, signed, and issued by a third party called a certificate authority (CA) that is authorized to validate the identity of the applicant. <\/span><\/p>\n<h2><span style=\"font-weight: 400;\">Pros and Cons anyone?<\/span><\/h2>\n<p><span style=\"font-weight: 400;\">In this next section, we will schematize the pros and cons outlining in a clearer way the real differences between the self-signed and CA certificates.<\/span><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-6577\" src=\"https:\/\/www.ssdnodes.com\/wp-content\/uploads\/2022\/05\/matrix-choice.jpg\" alt=\"cloud vps server hosting\" width=\"700\" height=\"465\" srcset=\"https:\/\/www.ssdnodes.com\/wp-content\/uploads\/2022\/05\/matrix-choice.jpg 960w, https:\/\/www.ssdnodes.com\/wp-content\/uploads\/2022\/05\/matrix-choice-300x199.jpg 300w, https:\/\/www.ssdnodes.com\/wp-content\/uploads\/2022\/05\/matrix-choice-768x510.jpg 768w\" sizes=\"auto, (max-width: 700px) 100vw, 700px\" \/><\/p>\n<h3><span style=\"font-weight: 400;\">Advantages of Self-Signed SSL Certificates<\/span><\/h3>\n<ul>\n<li style=\"font-weight: 400;\"><b><i>They are free.<\/i><\/b><\/li>\n<li style=\"font-weight: 400;\"><b><i>They are very convenient for internal (intranet) sites<\/i><\/b><span style=\"font-weight: 400;\">, and sites used in testing environments.<\/span><\/li>\n<li style=\"font-weight: 400;\"><b><i>You can specify the certificate\u2019s lifetim<\/i><\/b><span style=\"font-weight: 400;\">e adding more control over its use.<\/span><\/li>\n<li style=\"font-weight: 400;\"><b><i>Data encryption and decryption are done with the same ciphers<\/i><\/b><span style=\"font-weight: 400;\"> used by paid SSL certificates.<\/span><\/li>\n<\/ul>\n<h3><span style=\"font-weight: 400;\">Disadvantages of Self-Signed SSL Certificates<\/span><\/h3>\n<ul>\n<li style=\"font-weight: 400;\"><b><i>They can cost you more than you think.<\/i><\/b><span style=\"font-weight: 400;\"> While you can save some money using a free Self-Signed SSL Certificate at first. There is a high risk that attackers can cause enormous damage to your website, which may be astronomically higher than the price you would pay for an SSL Certificate.<\/span><\/li>\n<\/ul>\n<ul>\n<li style=\"font-weight: 400;\"><b><i>Their lifetime is manually set upon creation, <\/i><\/b><span style=\"font-weight: 400;\">hence a renewal reminder should be set before they expire, which would cause a management hassle.<\/span><\/li>\n<li style=\"font-weight: 400;\"><b><i>No support for advanced PKI <\/i><\/b><span style=\"font-weight: 400;\">(Public Key Infrastructure) functions (e.g. Online checking of the revocation list etc.).<\/span><\/li>\n<li style=\"font-weight: 400;\"><b><i>They cannot be revoked <\/i><\/b><i>which <\/i><span style=\"font-weight: 400;\">makes a compromised certificate difficult to identify, and this has several security challenges.<\/span><\/li>\n<\/ul>\n<p><i>Couple these self-signed certificate vulnerabilities with the operational challenges<\/i> most organizations face with expiring and misconfigured certificates, and you can see how attackers can easily exploit this vulnerability.<\/p>\n<h3><span style=\"font-weight: 400;\">Advantages of CA Certificates<\/span><\/h3>\n<ul>\n<li style=\"font-weight: 400;\"><b><i>They are suitable for all public-facing websites and software<\/i><\/b><span style=\"font-weight: 400;\">.<\/span><\/li>\n<li style=\"font-weight: 400;\"><b><i>They can be revoked <\/i><\/b><span style=\"font-weight: 400;\">by the certificate authority if they discover that it has been compromised, but organizations using self-signed certificates must go through the process of replacing or rotating the certificate.\u00a0<\/span><\/li>\n<li style=\"font-weight: 400;\"><b><i>They support PKI (Public Key Infrastructure) functions<\/i><\/b><span style=\"font-weight: 400;\">, like:<br \/>\n<\/span><span style=\"font-weight: 400;\">\u00a0- SSL\/TLS certificates to secure web browsing experiences and communications.<br \/>\n<\/span><span style=\"font-weight: 400;\">\u00a0- Digital signatures on software.<br \/>\n<\/span><span style=\"font-weight: 400;\">\u00a0- Restricted access to enterprise intranets and VPNs.<br \/>\n<\/span><span style=\"font-weight: 400;\">\u00a0- Password-free Wifi access based on device ownership.<br \/>\n<\/span><span style=\"font-weight: 400;\">\u00a0- Email and data encryption.<\/span><\/li>\n<li style=\"font-weight: 400;\"><b><i>They offer protection and customers\u2019 trust for:<br \/>\n<\/i><\/b><span style=\"font-weight: 400;\">\u00a0- Paid subscriptions or memberships.<br \/>\n<\/span><span style=\"font-weight: 400;\">\u00a0- Tax information, health records of users, or any other personally identifiable information (PII).<br \/>\n<\/span><span style=\"font-weight: 400;\">\u00a0- Donations, charity, or fundraising.<br \/>\n<\/span><span style=\"font-weight: 400;\">\u00a0- eCommerce facilities.<\/span><\/li>\n<\/ul>\n<h3><span style=\"font-weight: 400;\">Disadvantages of CA certificates<\/span><\/h3>\n<ul>\n<li style=\"font-weight: 400;\"><b><i>They are paid services. Although there are some free CA certificates such as <a href=\"https:\/\/en.wikipedia.org\/wiki\/Let&#039;s_Encrypt\" target=\"_blank\" rel=\"noopener\">Let's Encrypt<\/a>\u00a0<\/i><\/b><\/li>\n<li style=\"font-weight: 400;\"><b><i>You cannot specify the certificate\u2019s lifetime<\/i><\/b><span style=\"font-weight: 400;\">, which is a limiting factor for control freaks.<\/span><\/li>\n<li style=\"font-weight: 400;\"><b><i>You might be led to pay subscriptions for fake and fraudulent CAs<\/i><\/b>... So always make sure that you are purchasing from a trustworthy CA like <i>Symantec, Let's Encrypt, GeoTrust, Comodo, DigiCert, Thawte, GoDaddy, Network Solutions, RapidSSLonline, SSL.com, Entrust Datacard<\/i><\/li>\n<\/ul>\n<h2><span style=\"font-weight: 400;\">Bottom Line?<\/span><\/h2>\n<ul>\n<li style=\"font-weight: 400;\"><span style=\"font-weight: 400;\">A self-signed certificate is convenient when used in private networks and testing environments.<\/span><\/li>\n<li style=\"font-weight: 400;\"><span style=\"font-weight: 400;\">A CA certificate signed by a publicly trusted CA can build trust among website visitors, and therefore, it is used to validate public websites.<\/span><\/li>\n<\/ul>\n<h2><span style=\"font-weight: 400;\"><a name=\"cert_link\"><\/a>How to set up your Self-Signed or CA certificate<\/span><\/h2>\n<p><span style=\"font-weight: 400;\">Our tech team has prepared a step-by-step tutorial with hands-on examples for <a href=\"https:\/\/www.ssdnodes.com\/blog\/install-lets-encrypt-on-ubuntu-certbot-apache-and-nginx\/\">securing your site with self-signed or CA certificates on Ubuntu<\/a>.<\/span><\/p>\n<h2>Reader Alert<\/h2>\n<p><span style=\"font-weight: 400;\">If you feel that this topic is too technical, or beyond your expertise, you can choose a very convenient and practical solution, ready-made, fully tested, and developed by SSD Nodes (That is us \ud83d\ude0a) to create a website with an active SSL self-signed certificate.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Just visit<\/span> <a href=\"https:\/\/www.ssdnodes.com\/\"><span style=\"font-weight: 400;\">our website<\/span><\/a><span style=\"font-weight: 400;\">, choose the server\u2019s specifications that fit your needs, along with any of the 1-Click Applications we offer (<\/span><em>WordPress, Zabbix, phpMyAdmin, Webmin, Nextcloud, LAMP, LEMP, Grafana, MongoDB<\/em>\u00a0<span style=\"font-weight: 400;\">to name a few), complete your checkout, and in a couple of minutes, our algorithms will make it ready to use <\/span><span style=\"font-weight: 400;\">with an active SSL self-signed certificate!<\/span><\/p>\n<h3><span style=\"font-weight: 400;\"><strong>Enjoy!<\/strong><\/span><\/h3>\n<div><strong>If you liked this article, share it with your friends &amp; colleagues on Facebook, Twitter, Reddit etc. You can use the sharing module on your right.<\/strong><\/div>\n<p>&nbsp;<\/p>\n<div><strong>Find more blog posts, tutorials, comparisons, opinions &amp; how-to articles on <\/strong><a href=\"https:\/\/www.ssdnodes.com\/?utm_source=blog&amp;utm_medium=footer&amp;utm_campaign=serverwise\" target=\"_blank\" rel=\"noopener noreferrer\"><strong>Serverwise<\/strong><\/a><strong>. If you want us to write on a particular topic, please drop a line to our e<\/strong><strong>ditorial team at <\/strong><a href=\"mailto:hello@ssdnodes.com\" target=\"_blank\" rel=\"noopener noreferrer\"><strong>hello@ssdnodes.com.<\/strong><\/a><\/div>\n<p>&nbsp;<\/p>\n<div><strong>Looking for a reliable cloud hosting with minimal down time ready to be deployed across 12 global locations in minutes? Our plans start at $50 per year only (<\/strong><a href=\"https:\/\/www.ssdnodes.com\/sale\/9yr-anniversary\/?utm_source=blog&amp;utm_medium=footer&amp;utm_campaign=deals\" target=\"_blank\" rel=\"noopener noreferrer\"><strong>open specs<\/strong><\/a><strong>). Looking to scale up your hosting? Save thousands on premium plans. Check out our latest deals &amp; freebies\u00a0<\/strong><a href=\"https:\/\/www.ssdnodes.com\/sale\/9yr-anniversary\/?utm_source=blog&amp;utm_medium=footer&amp;utm_campaign=deals\" target=\"_blank\" rel=\"noopener noreferrer\"><strong>here<\/strong><\/a><strong>.<\/strong><\/div>\n","protected":false},"excerpt":{"rendered":"<p>~ Never take any risks when it comes to your server\u2019s security! While your business will surely offer more and more online services and transactions, internet security becomes both a priority and a necessity for your customers\u2019 online transactions, to ensure that sensitive information \u2013 such as a credit card number and personal information \u2013  &#8230;<\/p>\n","protected":false},"author":15,"featured_media":6670,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"inline_featured_image":false,"footnotes":""},"categories":[18],"tags":[202,201],"class_list":["post-6574","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-devops","tag-ca-ssl","tag-self-signed-ssl"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.ssdnodes.com\/wp-json\/wp\/v2\/posts\/6574","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.ssdnodes.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.ssdnodes.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.ssdnodes.com\/wp-json\/wp\/v2\/users\/15"}],"replies":[{"embeddable":true,"href":"https:\/\/www.ssdnodes.com\/wp-json\/wp\/v2\/comments?post=6574"}],"version-history":[{"count":6,"href":"https:\/\/www.ssdnodes.com\/wp-json\/wp\/v2\/posts\/6574\/revisions"}],"predecessor-version":[{"id":13508,"href":"https:\/\/www.ssdnodes.com\/wp-json\/wp\/v2\/posts\/6574\/revisions\/13508"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.ssdnodes.com\/wp-json\/wp\/v2\/media\/6670"}],"wp:attachment":[{"href":"https:\/\/www.ssdnodes.com\/wp-json\/wp\/v2\/media?parent=6574"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ssdnodes.com\/wp-json\/wp\/v2\/categories?post=6574"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ssdnodes.com\/wp-json\/wp\/v2\/tags?post=6574"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}