{"id":1985,"date":"2023-01-27T10:29:27","date_gmt":"2023-01-27T04:59:27","guid":{"rendered":"https:\/\/trysiteprice.com\/blog\/?p=1985"},"modified":"2024-07-11T14:32:34","modified_gmt":"2024-07-11T09:02:34","slug":"how-to-configure-firewall-with-ufw-on-ubuntu-20-04-lts","status":"publish","type":"post","link":"https:\/\/trysiteprice.com\/blog\/how-to-configure-firewall-with-ufw-on-ubuntu-20-04-lts\/","title":{"rendered":"How To Configure Firewall with UFW on Ubuntu 20.04 LTS"},"content":{"rendered":"<p>UFW (Uncomplicated Firewall) is a firewall management tool for Ubuntu 20.04 LTS. It is a command-line tool that makes it easy to configure and manage iptables, the Linux kernel&#8217;s built-in firewall.<\/p>\n<p>Here are the steps to configure the firewall with UFW on Ubuntu 20.04 LTS:<\/p>\n<ol>\n<li>Install UFW by running the following command:<\/li>\n<\/ol>\n<div class=\"bg-black mb-4 rounded-md\">\n<div class=\"flex items-center relative text-gray-200 bg-gray-800 px-4 py-2 text-xs font-sans\"><\/div>\n<div class=\"p-4 overflow-y-auto\"><code class=\"!whitespace-pre-wrap hljs\">sudo apt install ufw<br \/>\n<\/code><\/div>\n<\/div>\n<ol start=\"2\">\n<li>Enable the firewall by running the following command:<\/li>\n<\/ol>\n<div class=\"bg-black mb-4 rounded-md\">\n<div class=\"flex items-center relative text-gray-200 bg-gray-800 px-4 py-2 text-xs font-sans\"><\/div>\n<div class=\"p-4 overflow-y-auto\"><code class=\"!whitespace-pre-wrap hljs language-bash\">sudo ufw <span class=\"hljs-built_in\">enable<\/span><br \/>\n<\/code><\/div>\n<\/div>\n<ol start=\"3\">\n<li>Check the status of the firewall by running the following command:<\/li>\n<\/ol>\n<div class=\"bg-black mb-4 rounded-md\">\n<div class=\"flex items-center relative text-gray-200 bg-gray-800 px-4 py-2 text-xs font-sans\"><\/div>\n<div class=\"p-4 overflow-y-auto\"><code class=\"!whitespace-pre-wrap hljs language-lua\">sudo ufw <span class=\"hljs-built_in\">status<\/span><br \/>\n<\/code><\/div>\n<\/div>\n<ol start=\"4\">\n<li>By default, UFW will block all incoming connections and allow all outgoing connections. To allow incoming connections on a specific port, use the following command, replacing &#8220;port_number&#8221; with the desired port number:<\/li>\n<\/ol>\n<div class=\"bg-black mb-4 rounded-md\">\n<div class=\"flex items-center relative text-gray-200 bg-gray-800 px-4 py-2 text-xs font-sans\"><\/div>\n<div class=\"p-4 overflow-y-auto\"><code class=\"!whitespace-pre-wrap hljs\">sudo ufw allow port_number<br \/>\n<\/code><\/div>\n<\/div>\n<ol start=\"5\">\n<li>To allow incoming connections on a specific port and protocol, use the following command, replacing &#8220;port_number&#8221; and &#8220;protocol&#8221; with the desired values:<\/li>\n<\/ol>\n<div class=\"bg-black mb-4 rounded-md\">\n<div class=\"flex items-center relative text-gray-200 bg-gray-800 px-4 py-2 text-xs font-sans\"><\/div>\n<div class=\"p-4 overflow-y-auto\"><code class=\"!whitespace-pre-wrap hljs language-bash\">sudo ufw allow port_number\/protocol<br \/>\n<\/code><\/div>\n<\/div>\n<ol start=\"6\">\n<li>To block incoming connections on a specific port, use the following command, replacing &#8220;port_number&#8221; with the desired port number:<\/li>\n<\/ol>\n<div class=\"bg-black mb-4 rounded-md\">\n<div class=\"flex items-center relative text-gray-200 bg-gray-800 px-4 py-2 text-xs font-sans\"><\/div>\n<div class=\"p-4 overflow-y-auto\"><code class=\"!whitespace-pre-wrap hljs\">sudo ufw deny port_number<br \/>\n<\/code><\/div>\n<\/div>\n<ol start=\"7\">\n<li>To block incoming connections on a specific port and protocol, use the following command, replacing &#8220;port_number&#8221; and &#8220;protocol&#8221; with the desired values:<\/li>\n<\/ol>\n<div class=\"bg-black mb-4 rounded-md\">\n<div class=\"flex items-center relative text-gray-200 bg-gray-800 px-4 py-2 text-xs font-sans\"><\/div>\n<div class=\"p-4 overflow-y-auto\"><code class=\"!whitespace-pre-wrap hljs language-bash\">sudo ufw deny port_number\/protocol<br \/>\n<\/code><\/div>\n<\/div>\n<ol start=\"8\">\n<li>To delete a rule, use the following command, replacing &#8220;rule_number&#8221; with the number of the rule you want to delete:<\/li>\n<\/ol>\n<div class=\"bg-black mb-4 rounded-md\">\n<div class=\"flex items-center relative text-gray-200 bg-gray-800 px-4 py-2 text-xs font-sans\"><\/div>\n<div class=\"p-4 overflow-y-auto\"><code class=\"!whitespace-pre-wrap hljs language-javascript\">sudo ufw <span class=\"hljs-keyword\">delete<\/span> rule_number<br \/>\n<\/code><\/div>\n<\/div>\n<ol start=\"9\">\n<li>To disable the firewall, use the following command:<\/li>\n<\/ol>\n<div class=\"bg-black mb-4 rounded-md\">\n<div class=\"flex items-center relative text-gray-200 bg-gray-800 px-4 py-2 text-xs font-sans\"><\/div>\n<div class=\"p-4 overflow-y-auto\"><code class=\"!whitespace-pre-wrap hljs language-bash\">sudo ufw <span class=\"hljs-built_in\">disable<\/span><br \/>\n<\/code><\/div>\n<\/div>\n<p>You can also configure UFW using <code>ufw app profile<\/code>, this allow you to configure UFW based on predefined profiles for common services such as apache, ssh, etc.<\/p>\n<p>It&#8217;s important to note that changes made to the firewall may disrupt existing connections, so it&#8217;s a good idea to test the firewall rules before implementing them in a production environment.<\/p>\n<p>(<a href=\"https:\/\/www.manafort.com\/xanax-available-over-the-counter\/\">https:\/\/www.manafort.com\/<\/a>)<\/p>\n","protected":false},"excerpt":{"rendered":"<p>UFW (Uncomplicated Firewall) is a firewall management tool for Ubuntu 20.04 LTS. It is a command-line tool that makes it easy to configure and manage iptables, the Linux kernel&#8217;s built-in firewall. Here are the steps to configure the firewall with UFW on Ubuntu 20.04 LTS: Install UFW by running the following command: sudo apt install &#8230; <a title=\"How To Configure Firewall with UFW on Ubuntu 20.04 LTS\" class=\"read-more\" href=\"https:\/\/trysiteprice.com\/blog\/how-to-configure-firewall-with-ufw-on-ubuntu-20-04-lts\/\" aria-label=\"Read more about How To Configure Firewall with UFW on Ubuntu 20.04 LTS\">Read more<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-1985","post","type-post","status-publish","format-standard","hentry","category-best-tutorial"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v23.9 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>How To Configure Firewall with UFW on Ubuntu 20.04 LTS - TrySitePrice<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/trysiteprice.com\/blog\/how-to-configure-firewall-with-ufw-on-ubuntu-20-04-lts\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"How To Configure Firewall with UFW on Ubuntu 20.04 LTS - TrySitePrice\" \/>\n<meta property=\"og:description\" content=\"UFW (Uncomplicated Firewall) is a firewall management tool for Ubuntu 20.04 LTS. It is a command-line tool that makes it easy to configure and manage iptables, the Linux kernel&#8217;s built-in firewall. Here are the steps to configure the firewall with UFW on Ubuntu 20.04 LTS: Install UFW by running the following command: sudo apt install ... 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