{"id":3541,"date":"2025-09-05T05:46:55","date_gmt":"2025-09-05T02:46:55","guid":{"rendered":"https:\/\/wafatech.sa\/blog\/linux\/linux-security\/securing-your-linux-server-enabling-https-with-modern-ciphers\/"},"modified":"2025-09-05T05:46:55","modified_gmt":"2025-09-05T02:46:55","slug":"securing-your-linux-server-enabling-https-with-modern-ciphers","status":"publish","type":"post","link":"https:\/\/wafatech.sa\/blog\/linux\/linux-security\/securing-your-linux-server-enabling-https-with-modern-ciphers\/","title":{"rendered":"Securing Your Linux Server: Enabling HTTPS with Modern Ciphers"},"content":{"rendered":"<p><br \/>\n<\/p>\n<p>In today&#8217;s digital landscape, securing your web server is more critical than ever. With an increasing number of cyber threats and privacy concerns, enabling HTTPS is a fundamental step toward safeguarding sensitive data transmitted between clients and your server. In this article, we&#8217;ll discuss how to set up HTTPS on your Linux server using modern ciphers harnessed via Let&#8217;s Encrypt and Nginx.<\/p>\n<p><\/p>\n<h2>Understanding HTTPS and Why It\u2019s Important<\/h2>\n<p><\/p>\n<p><strong>HTTPS (HyperText Transfer Protocol Secure)<\/strong> is an extension of HTTP, which encrypts the data sent between the user\u2019s browser and your web server, preventing eavesdropping and tampering. The key benefits of using HTTPS include:<\/p>\n<p><\/p>\n<ol><\/p>\n<li><strong>Data Encryption<\/strong>: Protects sensitive information from attackers.<\/li>\n<p><\/p>\n<li><strong>Data Integrity<\/strong>: Ensures that information exchanged is not altered during transmission.<\/li>\n<p><\/p>\n<li><strong>Authentication<\/strong>: Confirms that users are communicating with the intended server.<\/li>\n<p><\/p>\n<li><strong>Search Engine Ranking<\/strong>: Search engines prioritize secure sites in their rankings.<\/li>\n<p>\n<\/ol>\n<p><\/p>\n<h2>Prerequisites<\/h2>\n<p><\/p>\n<p>Before getting started, ensure that you have:<\/p>\n<p><\/p>\n<ul><\/p>\n<li>A Linux server (Ubuntu, CentOS, etc.)<\/li>\n<p><\/p>\n<li>A registered domain name<\/li>\n<p><\/p>\n<li>Root or sudo access to your server<\/li>\n<p>\n<\/ul>\n<p><\/p>\n<h2>Step 1: Install Nginx<\/h2>\n<p><\/p>\n<p>To proceed with HTTPS configuration, you first need a web server. Nginx is a high-performance web server that is commonly used and provides excellent support for SSL.<\/p>\n<p><\/p>\n<h3>Installing Nginx<\/h3>\n<p><\/p>\n<p>For <strong>Ubuntu<\/strong>:<\/p>\n<p><\/p>\n<p>bash<br \/>\nsudo apt update<br \/>\nsudo apt install nginx<\/p>\n<p><\/p>\n<p>For <strong>CentOS<\/strong>:<\/p>\n<p><\/p>\n<p>bash<br \/>\nsudo yum install epel-release<br \/>\nsudo yum install nginx<\/p>\n<p><\/p>\n<h3>Start and Enable Nginx<\/h3>\n<p><\/p>\n<p>bash<br \/>\nsudo systemctl start nginx<br \/>\nsudo systemctl enable nginx<\/p>\n<p><\/p>\n<h2>Step 2: Obtain an SSL Certificate with Let&#8217;s Encrypt<\/h2>\n<p><\/p>\n<p>Let&#8217;s Encrypt offers free SSL certificates that you can use to secure your site. We&#8217;ll use Certbot, a tool that automates the process of obtaining and renewing SSL certificates.<\/p>\n<p><\/p>\n<h3>Installing Certbot<\/h3>\n<p><\/p>\n<p>For <strong>Ubuntu<\/strong>:<\/p>\n<p><\/p>\n<p>bash<br \/>\nsudo apt install certbot python3-certbot-nginx<\/p>\n<p><\/p>\n<p>For <strong>CentOS<\/strong>:<\/p>\n<p><\/p>\n<p>bash<br \/>\nsudo yum install certbot python2-certbot-nginx<\/p>\n<p><\/p>\n<h3>Obtaining the SSL Certificate<\/h3>\n<p><\/p>\n<p>Run the following command, replacing <code>yourdomain.com<\/code> with your actual domain name:<\/p>\n<p><\/p>\n<p>bash<br \/>\nsudo certbot &#8211;nginx -d yourdomain.com -d www.yourdomain.com<\/p>\n<p><\/p>\n<p>Follow the prompts to complete the installation, and Certbot will automatically configure Nginx to use the generated SSL certificate.<\/p>\n<p><\/p>\n<h2>Step 3: Configuring Nginx for HTTPS<\/h2>\n<p><\/p>\n<p>After obtaining your SSL certificate, you may need to review and adjust the Nginx configuration to enforce HTTPS and utilize modern cryptographic settings.<\/p>\n<p><\/p>\n<h3>Open the Nginx Configuration<\/h3>\n<p><\/p>\n<p>Open your Nginx configuration file located in <code>\/etc\/nginx\/sites-available\/yourdomain<\/code> or <code>\/etc\/nginx\/conf.d\/default.conf<\/code>.<\/p>\n<p><\/p>\n<p>bash<br \/>\nsudo nano \/etc\/nginx\/sites-available\/yourdomain<\/p>\n<p><\/p>\n<h3>Nginx Configuration Block<\/h3>\n<p><\/p>\n<p>Ensure your server block looks similar to the following, with modern ciphers and HTTP\/2 enabled.<\/p>\n<p><\/p>\n<p>nginx<br \/>\nserver {<br \/>\nlisten 80;<br \/>\nserver_name yourdomain.com www.yourdomain.com;<br \/>\nreturn 301 <a href=\"https:\/\/$server_name$request_uri\">https:\/\/$server_name$request_uri<\/a>;  # Redirect HTTP to HTTPS<br \/>\n}<\/p>\n<p><\/p>\n<p>server {<br \/>\nlisten 443 ssl http2;<br \/>\nserver_name yourdomain.com www.yourdomain.com;<\/p>\n<p><\/p>\n<pre><code>ssl_certificate \/etc\/letsencrypt\/live\/yourdomain.com\/fullchain.pem;<br \/>\nssl_certificate_key \/etc\/letsencrypt\/live\/yourdomain.com\/privkey.pem;<br \/>\n<br \/>\nssl_protocols  TLSv1.2 TLSv1.3;  # Use only modern protocols<br \/>\nssl_ciphers  'ECDHE-ECDSA-AES256-GCM-SHA384:ECDHE-RSA-AES256-GCM-SHA384:ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES128-GCM-SHA256';<br \/>\nssl_prefer_server_ciphers off;<br \/>\n<br \/>\nlocation \/ {<br \/>\n    root \/var\/www\/yourdomain;<br \/>\n    index index.html index.htm;<br \/>\n}<\/code><\/pre>\n<p><\/p>\n<p>}<\/p>\n<p><\/p>\n<h3>Save and Exit<\/h3>\n<p><\/p>\n<p>Press <code>CTRL + X<\/code>, then <code>Y<\/code>, followed by <code>ENTER<\/code> to save and exit.<\/p>\n<p><\/p>\n<h2>Step 4: Test Nginx Configuration<\/h2>\n<p><\/p>\n<p>Before restarting Nginx, it is essential to ensure that there are no syntax errors in your configuration.<\/p>\n<p><\/p>\n<p>bash<br \/>\nsudo nginx -t<\/p>\n<p><\/p>\n<p>If the test is successful, restart Nginx:<\/p>\n<p><\/p>\n<p>bash<br \/>\nsudo systemctl restart nginx<\/p>\n<p><\/p>\n<h2>Step 5: Set Up Automatic SSL Certificate Renewal<\/h2>\n<p><\/p>\n<p>Let\u2019s Encrypt certificates are valid for only 90 days. To ensure that your certificates renew automatically, you can set up a cron job.<\/p>\n<p><\/p>\n<h3>Edit Your Cron Jobs<\/h3>\n<p><\/p>\n<p>bash<br \/>\nsudo crontab -e<\/p>\n<p><\/p>\n<p>Add the following line to automatically renew your certificates:<\/p>\n<p><\/p>\n<p>bash<br \/>\n0 <em>\/12 <\/em> <em> <\/em> certbot renew &#8211;quiet<\/p>\n<p><\/p>\n<p>This command runs the renewal process twice a day.<\/p>\n<p><\/p>\n<h2>Conclusion<\/h2>\n<p><\/p>\n<p>Securing your Linux server with HTTPS is a straightforward process that greatly enhances your website&#8217;s security. By following the steps outlined in this article, you can secure your server and protect your users\u2019 data with modern ciphers and certificates from Let&#8217;s Encrypt. Continually monitor and test your server\u2019s security posture to stay ahead of potential threats and maintain the trust of your clientele.<\/p>\n<p><\/p>\n<p>For more tips and tricks on securing your Linux server, stay tuned to the WafaTech Blog!<\/p>\n\n","protected":false},"excerpt":{"rendered":"<p>In today&#8217;s digital landscape, securing your web server is more critical than ever. With an increasing number of cyber threats and privacy concerns, enabling HTTPS is a fundamental step toward safeguarding sensitive data transmitted between clients and your server. In this article, we&#8217;ll discuss how to set up HTTPS on your Linux server using modern [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":3542,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_et_pb_use_builder":"","_et_pb_old_content":"","_et_gb_content_width":"","inline_featured_image":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[22],"tags":[1733,1668,1732,265,503,264,266],"class_list":["post-3541","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-linux-security","tag-ciphers","tag-enabling","tag-https","tag-linux","tag-modern","tag-securing","tag-server","et-has-post-format-content","et_post_format-et-post-format-standard"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v26.5 (Yoast SEO v27.3) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Securing Your Linux Server: Enabling HTTPS with Modern Ciphers - 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