{"id":191,"date":"2025-02-25T05:29:11","date_gmt":"2025-02-25T05:29:11","guid":{"rendered":"https:\/\/stagegrow.pheonixsolutions.com\/?p=191"},"modified":"2026-09-01T04:53:11","modified_gmt":"2026-09-01T04:53:11","slug":"how-to-configure-firewall-in-linux-step-by-step-guide","status":"publish","type":"post","link":"https:\/\/pheonixsolutions.com\/grow\/how-to-configure-firewall-in-linux-step-by-step-guide\/","title":{"rendered":"How to Configure Firewall in Linux: Step-by-Step Guide"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">A <a href=\"https:\/\/pheonixsolutions.com\">firewall<\/a> is an essential security feature that controls network traffic to and from your system. In Linux, <a href=\"https:\/\/pheonixsolutions.com\">firewall configurations <\/a>can be managed using different tools like iptables, firewalld, and UFW (Uncomplicated Firewall).<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">In this guide, we will cover step-by-step <a href=\"https:\/\/pheonixsolutions.com\">firewall configuration<\/a> in Linux using firewalld (for RHEL-based systems) and UFW (for Ubuntu\/Debian-based systems).<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>1. Checking <a href=\"https:\/\/pheonixsolutions.com\">Firewall Status<\/a><\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Before configuring the firewall, check whether it is active on your system.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">For <strong>firewalld<\/strong> (RHEL, CentOS, Fedora):<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>sudo systemctl status firewalld<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\"><br>For <strong>UFW<\/strong> (Ubuntu, Debian):<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>sudo ufw status<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">If the firewall is not running, enable it with:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>sudo systemctl start firewalld   # For firewalld\nsudo ufw enable                  # For UFW<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\"><br><strong>2. Allowing or Blocking Services<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Using Firewalld (RHEL, CentOS, Fedora)<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">To <strong>allow a service<\/strong>, use:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>sudo firewall-cmd --add-service=http --permanent\nsudo firewall-cmd --add-service=https --permanent\nsudo firewall-cmd --reload<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\"><br>To <strong>deny a service<\/strong>, use:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>sudo firewall-cmd --remove-service=ftp --permanent\nsudo firewall-cmd --reload<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Using UFW (Ubuntu, Debian)<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">To <strong>allow traffic on a port<\/strong>, use:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>sudo ufw allow 80\/tcp   # Allow HTTP traffic\nsudo ufw allow 443\/tcp  # Allow HTTPS traffic<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\"><br>To <strong>deny a service<\/strong>, use:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>sudo ufw deny 21\/tcp   # Block FTP<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\"><br><strong>3. Allowing or Blocking Specific IP Addresses<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">To allow traffic from a specific IP:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Firewalld:<\/strong><\/li>\n<\/ul>\n\n\n\n<pre class=\"wp-block-code\"><code>  sudo firewall-cmd --permanent --add-rich-rule='rule family=\"ipv4\" source address=\"192.168.1.100\" accept'\n  sudo firewall-cmd --reload<\/code><\/pre>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>UFW:<\/strong><\/li>\n<\/ul>\n\n\n\n<pre class=\"wp-block-code\"><code>  sudo ufw allow from 192.168.1.100<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">To <strong>block a specific IP<\/strong>:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Firewalld:<\/strong><\/li>\n<\/ul>\n\n\n\n<pre class=\"wp-block-code\"><code>  sudo firewall-cmd --permanent --add-rich-rule='rule family=\"ipv4\" source address=\"192.168.1.200\" drop'\n  sudo firewall-cmd --reload<\/code><\/pre>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>UFW:<\/strong><\/li>\n<\/ul>\n\n\n\n<pre class=\"wp-block-code\"><code>  sudo ufw deny from 192.168.1.200<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\"><br><strong>4. Allowing or Blocking Specific Ports<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">To allow a port:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Firewalld:<\/strong><\/li>\n<\/ul>\n\n\n\n<pre class=\"wp-block-code\"><code>  sudo firewall-cmd --permanent --add-port=8080\/tcp\n  sudo firewall-cmd --reload<\/code><\/pre>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>UFW:<\/strong><\/li>\n<\/ul>\n\n\n\n<pre class=\"wp-block-code\"><code>  sudo ufw allow 8080\/tcp<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">To block a port:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Firewalld:<\/strong><\/li>\n<\/ul>\n\n\n\n<pre class=\"wp-block-code\"><code>  sudo firewall-cmd --permanent --remove-port=8080\/tcp\n  sudo firewall-cmd --reload<\/code><\/pre>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>UFW:<\/strong><\/li>\n<\/ul>\n\n\n\n<pre class=\"wp-block-code\"><code>  sudo ufw deny 8080\/tcp<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\"><br><strong>5. Listing Firewall Rules<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">To view <a href=\"https:\/\/pheonixsolutions.com\">current firewall rules<\/a>, use:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Firewalld:<\/strong><\/li>\n<\/ul>\n\n\n\n<pre class=\"wp-block-code\"><code>  sudo firewall-cmd --list-all<\/code><\/pre>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>UFW:<\/strong><\/li>\n<\/ul>\n\n\n\n<pre class=\"wp-block-code\"><code>  sudo ufw status numbered<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\"><br><strong>6. Deleting Firewall Rules<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">To remove a specific service or port:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Firewalld:<\/strong><\/li>\n<\/ul>\n\n\n\n<pre class=\"wp-block-code\"><code>  sudo firewall-cmd --permanent --remove-service=http\n  sudo firewall-cmd --permanent --remove-port=8080\/tcp\n  sudo firewall-cmd --reload<\/code><\/pre>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>UFW:<\/strong><\/li>\n<\/ul>\n\n\n\n<pre class=\"wp-block-code\"><code>  sudo ufw delete allow 80\/tcp\n  sudo ufw delete allow 8080\/tcp<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">To remove a <strong><a href=\"https:\/\/pheonixsolutions.com\">specific IP rule<\/a><\/strong>:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Firewalld:<\/strong><\/li>\n<\/ul>\n\n\n\n<pre class=\"wp-block-code\"><code>  sudo firewall-cmd --permanent --remove-rich-rule='rule family=\"ipv4\" source address=\"192.168.1.100\" accept'\n  sudo firewall-cmd --reload<\/code><\/pre>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>UFW:<\/strong><\/li>\n<\/ul>\n\n\n\n<pre class=\"wp-block-code\"><code>  sudo ufw delete allow from 192.168.1.100<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\"><br><strong>7. Resetting <a href=\"https:\/\/pheonixsolutions.com\">Firewall Rules<\/a><\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">If you want to <strong>reset all firewall rules<\/strong>:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Firewalld:<\/strong><\/li>\n<\/ul>\n\n\n\n<pre class=\"wp-block-code\"><code>  sudo firewall-cmd --complete-reload<\/code><\/pre>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>UFW:<\/strong><\/li>\n<\/ul>\n\n\n\n<pre class=\"wp-block-code\"><code>  sudo ufw reset<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\"><br><strong>8. Disabling the Firewall (If Necessary)<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">To temporarily disable the firewall:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Firewalld:<\/strong><\/li>\n<\/ul>\n\n\n\n<pre class=\"wp-block-code\"><code>  sudo systemctl stop firewalld<\/code><\/pre>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>UFW:<\/strong><\/li>\n<\/ul>\n\n\n\n<pre class=\"wp-block-code\"><code>  sudo ufw disable<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">To <strong>permanently disable<\/strong> it on <a href=\"https:\/\/pheonixsolutions.com\">system startup<\/a>:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Firewalld:<\/strong><\/li>\n<\/ul>\n\n\n\n<pre class=\"wp-block-code\"><code>  sudo systemctl disable firewalld<\/code><\/pre>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>UFW:<\/strong><\/li>\n<\/ul>\n\n\n\n<pre class=\"wp-block-code\"><code>  sudo systemctl disable ufw<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\"><br><strong>Why Choose <a href=\"https:\/\/pheonixsolutions.com\">Pheonix Solutions<\/a>?<\/strong><br>At <a href=\"https:\/\/pheonixsolutions.com\">Pheonix Solutions<\/a>, we provide expert <a href=\"https:\/\/pheonixsolutions.com\">firewall configuration<\/a> and managed <a href=\"https:\/\/pheonixsolutions.com\">security solutions<\/a> to keep your <a href=\"https:\/\/pheonixsolutions.com\">Linux servers <\/a>protected. Here\u2019s why businesses trust us:<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><a href=\"https:\/pheonixsolutions.com\">Expert Support<\/a> \u2013 Our Linux specialists configure and optimize firewalls for <a href=\"https:\/\/pheonixsolutions.com\">maximum security<\/a>.<\/li>\n\n\n\n<li>Customized <a href=\"https:\/\/pheonixsolutions.com\">Security Solutions<\/a> \u2013 Tailored firewall rules based on your business needs.<\/li>\n\n\n\n<li>Optimized Performance \u2013 We <a href=\"https:\/\/pheonixsolutions.com\">ensure security<\/a> without compromising speed or uptime.<\/li>\n\n\n\n<li><a href=\"https:\/\/pheonixsolutions.com\">Proactive Threat <\/a>Management \u2013 Detecting and mitigating risks before they become a problem.<\/li>\n\n\n\n<li>Reliable Assistance \u2013 Our team is available to help you with <a href=\"https:\/\/pheonixsolutions.com\">firewall configurations<\/a> and <a href=\"https:\/\/pheonixsolutions.com\">troubleshooting<\/a>.<\/li>\n<\/ol>\n\n\n\n<p class=\"wp-block-paragraph\">Secure your Linux infrastructure with <a href=\"https:\/\/pheonixsolutions.com\">Pheonix Solutions<\/a> and stay protected against cyber threats!<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Conclusion<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><a href=\"https:\/\/pheonixsolutions.com\/index\">Configuring a firewall<\/a> in Linux is essential for securing your server from unauthorized access and cyber threats. By following this guide, you can allow or block services, manage specific IP addresses, and secure your system efficiently.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Whether you&#8217;re using Firewalld (for RHEL-based systems) or UFW (for Ubuntu\/Debian-based systems), proper <a href=\"https:\/\/pheonixsolutions.com\">firewall management<\/a> is key to enhancing security and performance.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n","protected":false},"excerpt":{"rendered":"<p>A firewall is an essential security feature that controls network traffic to and from your system. In Linux, firewall configurations can be managed using different tools like iptables, firewalld, and UFW (Uncomplicated Firewall). In this guide, we will cover step-by-step firewall configuration in Linux using firewalld (for RHEL-based systems) and UFW (for Ubuntu\/Debian-based systems). 1.&hellip;<\/p>\n","protected":false},"author":1,"featured_media":1996,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[46],"tags":[],"class_list":["post-191","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-devops-infrastructure"],"blocksy_meta":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.1 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>How to Configure Firewall in Linux: Step-by-Step Guide - PHEONIXSOLUTIONS<\/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:\/\/pheonixsolutions.com\/grow\/how-to-configure-firewall-in-linux-step-by-step-guide\/\" \/>\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 in Linux: Step-by-Step Guide - PHEONIXSOLUTIONS\" \/>\n<meta property=\"og:description\" content=\"A firewall is an essential security feature that controls network traffic to and from your system. In Linux, firewall configurations can be managed using different tools like iptables, firewalld, and UFW (Uncomplicated Firewall). In this guide, we will cover step-by-step firewall configuration in Linux using firewalld (for RHEL-based systems) and UFW (for Ubuntu\/Debian-based systems). 1.&hellip;\" \/>\n<meta property=\"og:url\" content=\"https:\/\/pheonixsolutions.com\/grow\/how-to-configure-firewall-in-linux-step-by-step-guide\/\" \/>\n<meta property=\"og:site_name\" content=\"PHEONIXSOLUTIONS\" \/>\n<meta property=\"article:published_time\" content=\"2025-02-25T05:29:11+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2026-09-01T04:53:11+00:00\" \/>\n<meta name=\"author\" content=\"admin\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"admin\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"3 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/pheonixsolutions.com\\\/grow\\\/how-to-configure-firewall-in-linux-step-by-step-guide\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/pheonixsolutions.com\\\/grow\\\/how-to-configure-firewall-in-linux-step-by-step-guide\\\/\"},\"author\":{\"name\":\"admin\",\"@id\":\"https:\\\/\\\/pheonixsolutions.com\\\/grow\\\/#\\\/schema\\\/person\\\/f43f5f0aca0ba8ff36a08f2a6b7f588e\"},\"headline\":\"How to Configure Firewall in Linux: Step-by-Step Guide\",\"datePublished\":\"2025-02-25T05:29:11+00:00\",\"dateModified\":\"2026-09-01T04:53:11+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/pheonixsolutions.com\\\/grow\\\/how-to-configure-firewall-in-linux-step-by-step-guide\\\/\"},\"wordCount\":396,\"publisher\":{\"@id\":\"https:\\\/\\\/pheonixsolutions.com\\\/grow\\\/#organization\"},\"image\":{\"@id\":\"https:\\\/\\\/pheonixsolutions.com\\\/grow\\\/how-to-configure-firewall-in-linux-step-by-step-guide\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/pheonixsolutions.com\\\/grow\\\/wp-content\\\/uploads\\\/2025\\\/02\\\/firewall-antivirus-alert-protection-security-caution-concept_53876-124156.avif\",\"articleSection\":[\"DevOps &amp; Infrastructure\"],\"inLanguage\":\"en-US\"},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/pheonixsolutions.com\\\/grow\\\/how-to-configure-firewall-in-linux-step-by-step-guide\\\/\",\"url\":\"https:\\\/\\\/pheonixsolutions.com\\\/grow\\\/how-to-configure-firewall-in-linux-step-by-step-guide\\\/\",\"name\":\"How to Configure Firewall in Linux: Step-by-Step Guide - PHEONIXSOLUTIONS\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/pheonixsolutions.com\\\/grow\\\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\\\/\\\/pheonixsolutions.com\\\/grow\\\/how-to-configure-firewall-in-linux-step-by-step-guide\\\/#primaryimage\"},\"image\":{\"@id\":\"https:\\\/\\\/pheonixsolutions.com\\\/grow\\\/how-to-configure-firewall-in-linux-step-by-step-guide\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/pheonixsolutions.com\\\/grow\\\/wp-content\\\/uploads\\\/2025\\\/02\\\/firewall-antivirus-alert-protection-security-caution-concept_53876-124156.avif\",\"datePublished\":\"2025-02-25T05:29:11+00:00\",\"dateModified\":\"2026-09-01T04:53:11+00:00\",\"breadcrumb\":{\"@id\":\"https:\\\/\\\/pheonixsolutions.com\\\/grow\\\/how-to-configure-firewall-in-linux-step-by-step-guide\\\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/pheonixsolutions.com\\\/grow\\\/how-to-configure-firewall-in-linux-step-by-step-guide\\\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\\\/\\\/pheonixsolutions.com\\\/grow\\\/how-to-configure-firewall-in-linux-step-by-step-guide\\\/#primaryimage\",\"url\":\"https:\\\/\\\/pheonixsolutions.com\\\/grow\\\/wp-content\\\/uploads\\\/2025\\\/02\\\/firewall-antivirus-alert-protection-security-caution-concept_53876-124156.avif\",\"contentUrl\":\"https:\\\/\\\/pheonixsolutions.com\\\/grow\\\/wp-content\\\/uploads\\\/2025\\\/02\\\/firewall-antivirus-alert-protection-security-caution-concept_53876-124156.avif\",\"width\":740,\"height\":511},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/pheonixsolutions.com\\\/grow\\\/how-to-configure-firewall-in-linux-step-by-step-guide\\\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\\\/\\\/pheonixsolutions.com\\\/grow\\\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"How to Configure Firewall in Linux: Step-by-Step Guide\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/pheonixsolutions.com\\\/grow\\\/#website\",\"url\":\"https:\\\/\\\/pheonixsolutions.com\\\/grow\\\/\",\"name\":\"Pheonix Solutions\",\"description\":\"WE USED DELIVERY ON TIME!\",\"publisher\":{\"@id\":\"https:\\\/\\\/pheonixsolutions.com\\\/grow\\\/#organization\"},\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\\\/\\\/pheonixsolutions.com\\\/grow\\\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"en-US\"},{\"@type\":\"Organization\",\"@id\":\"https:\\\/\\\/pheonixsolutions.com\\\/grow\\\/#organization\",\"name\":\"Pheonix Solutions\",\"url\":\"https:\\\/\\\/pheonixsolutions.com\\\/grow\\\/\",\"logo\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\\\/\\\/pheonixsolutions.com\\\/grow\\\/#\\\/schema\\\/logo\\\/image\\\/\",\"url\":\"https:\\\/\\\/pheonixsolutions.com\\\/grow\\\/wp-content\\\/uploads\\\/2026\\\/09\\\/image-1.png\",\"contentUrl\":\"https:\\\/\\\/pheonixsolutions.com\\\/grow\\\/wp-content\\\/uploads\\\/2026\\\/09\\\/image-1.png\",\"width\":512,\"height\":120,\"caption\":\"Pheonix Solutions\"},\"image\":{\"@id\":\"https:\\\/\\\/pheonixsolutions.com\\\/grow\\\/#\\\/schema\\\/logo\\\/image\\\/\"}},{\"@type\":\"Person\",\"@id\":\"https:\\\/\\\/pheonixsolutions.com\\\/grow\\\/#\\\/schema\\\/person\\\/f43f5f0aca0ba8ff36a08f2a6b7f588e\",\"name\":\"admin\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/09bacc0294abee1322a23ab4bc6a0330dd4cb4df707dc9d0b0efeba6c109608b?s=96&d=mm&r=g\",\"url\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/09bacc0294abee1322a23ab4bc6a0330dd4cb4df707dc9d0b0efeba6c109608b?s=96&d=mm&r=g\",\"contentUrl\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/09bacc0294abee1322a23ab4bc6a0330dd4cb4df707dc9d0b0efeba6c109608b?s=96&d=mm&r=g\",\"caption\":\"admin\"},\"sameAs\":[\"http:\\\/\\\/pheonixsolutions.com\\\/grow\"],\"url\":\"https:\\\/\\\/pheonixsolutions.com\\\/grow\\\/author\\\/admin\\\/\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"How to Configure Firewall in Linux: Step-by-Step Guide - PHEONIXSOLUTIONS","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/pheonixsolutions.com\/grow\/how-to-configure-firewall-in-linux-step-by-step-guide\/","og_locale":"en_US","og_type":"article","og_title":"How to Configure Firewall in Linux: Step-by-Step Guide - PHEONIXSOLUTIONS","og_description":"A firewall is an essential security feature that controls network traffic to and from your system. In Linux, firewall configurations can be managed using different tools like iptables, firewalld, and UFW (Uncomplicated Firewall). In this guide, we will cover step-by-step firewall configuration in Linux using firewalld (for RHEL-based systems) and UFW (for Ubuntu\/Debian-based systems). 1.&hellip;","og_url":"https:\/\/pheonixsolutions.com\/grow\/how-to-configure-firewall-in-linux-step-by-step-guide\/","og_site_name":"PHEONIXSOLUTIONS","article_published_time":"2025-02-25T05:29:11+00:00","article_modified_time":"2026-09-01T04:53:11+00:00","author":"admin","twitter_card":"summary_large_image","twitter_misc":{"Written by":"admin","Est. reading time":"3 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/pheonixsolutions.com\/grow\/how-to-configure-firewall-in-linux-step-by-step-guide\/#article","isPartOf":{"@id":"https:\/\/pheonixsolutions.com\/grow\/how-to-configure-firewall-in-linux-step-by-step-guide\/"},"author":{"name":"admin","@id":"https:\/\/pheonixsolutions.com\/grow\/#\/schema\/person\/f43f5f0aca0ba8ff36a08f2a6b7f588e"},"headline":"How to Configure Firewall in Linux: Step-by-Step Guide","datePublished":"2025-02-25T05:29:11+00:00","dateModified":"2026-09-01T04:53:11+00:00","mainEntityOfPage":{"@id":"https:\/\/pheonixsolutions.com\/grow\/how-to-configure-firewall-in-linux-step-by-step-guide\/"},"wordCount":396,"publisher":{"@id":"https:\/\/pheonixsolutions.com\/grow\/#organization"},"image":{"@id":"https:\/\/pheonixsolutions.com\/grow\/how-to-configure-firewall-in-linux-step-by-step-guide\/#primaryimage"},"thumbnailUrl":"https:\/\/pheonixsolutions.com\/grow\/wp-content\/uploads\/2025\/02\/firewall-antivirus-alert-protection-security-caution-concept_53876-124156.avif","articleSection":["DevOps &amp; Infrastructure"],"inLanguage":"en-US"},{"@type":"WebPage","@id":"https:\/\/pheonixsolutions.com\/grow\/how-to-configure-firewall-in-linux-step-by-step-guide\/","url":"https:\/\/pheonixsolutions.com\/grow\/how-to-configure-firewall-in-linux-step-by-step-guide\/","name":"How to Configure Firewall in Linux: Step-by-Step Guide - PHEONIXSOLUTIONS","isPartOf":{"@id":"https:\/\/pheonixsolutions.com\/grow\/#website"},"primaryImageOfPage":{"@id":"https:\/\/pheonixsolutions.com\/grow\/how-to-configure-firewall-in-linux-step-by-step-guide\/#primaryimage"},"image":{"@id":"https:\/\/pheonixsolutions.com\/grow\/how-to-configure-firewall-in-linux-step-by-step-guide\/#primaryimage"},"thumbnailUrl":"https:\/\/pheonixsolutions.com\/grow\/wp-content\/uploads\/2025\/02\/firewall-antivirus-alert-protection-security-caution-concept_53876-124156.avif","datePublished":"2025-02-25T05:29:11+00:00","dateModified":"2026-09-01T04:53:11+00:00","breadcrumb":{"@id":"https:\/\/pheonixsolutions.com\/grow\/how-to-configure-firewall-in-linux-step-by-step-guide\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/pheonixsolutions.com\/grow\/how-to-configure-firewall-in-linux-step-by-step-guide\/"]}]},{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/pheonixsolutions.com\/grow\/how-to-configure-firewall-in-linux-step-by-step-guide\/#primaryimage","url":"https:\/\/pheonixsolutions.com\/grow\/wp-content\/uploads\/2025\/02\/firewall-antivirus-alert-protection-security-caution-concept_53876-124156.avif","contentUrl":"https:\/\/pheonixsolutions.com\/grow\/wp-content\/uploads\/2025\/02\/firewall-antivirus-alert-protection-security-caution-concept_53876-124156.avif","width":740,"height":511},{"@type":"BreadcrumbList","@id":"https:\/\/pheonixsolutions.com\/grow\/how-to-configure-firewall-in-linux-step-by-step-guide\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/pheonixsolutions.com\/grow\/"},{"@type":"ListItem","position":2,"name":"How to Configure Firewall in Linux: Step-by-Step Guide"}]},{"@type":"WebSite","@id":"https:\/\/pheonixsolutions.com\/grow\/#website","url":"https:\/\/pheonixsolutions.com\/grow\/","name":"Pheonix Solutions","description":"WE USED DELIVERY ON TIME!","publisher":{"@id":"https:\/\/pheonixsolutions.com\/grow\/#organization"},"potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/pheonixsolutions.com\/grow\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"en-US"},{"@type":"Organization","@id":"https:\/\/pheonixsolutions.com\/grow\/#organization","name":"Pheonix Solutions","url":"https:\/\/pheonixsolutions.com\/grow\/","logo":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/pheonixsolutions.com\/grow\/#\/schema\/logo\/image\/","url":"https:\/\/pheonixsolutions.com\/grow\/wp-content\/uploads\/2026\/09\/image-1.png","contentUrl":"https:\/\/pheonixsolutions.com\/grow\/wp-content\/uploads\/2026\/09\/image-1.png","width":512,"height":120,"caption":"Pheonix Solutions"},"image":{"@id":"https:\/\/pheonixsolutions.com\/grow\/#\/schema\/logo\/image\/"}},{"@type":"Person","@id":"https:\/\/pheonixsolutions.com\/grow\/#\/schema\/person\/f43f5f0aca0ba8ff36a08f2a6b7f588e","name":"admin","image":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/secure.gravatar.com\/avatar\/09bacc0294abee1322a23ab4bc6a0330dd4cb4df707dc9d0b0efeba6c109608b?s=96&d=mm&r=g","url":"https:\/\/secure.gravatar.com\/avatar\/09bacc0294abee1322a23ab4bc6a0330dd4cb4df707dc9d0b0efeba6c109608b?s=96&d=mm&r=g","contentUrl":"https:\/\/secure.gravatar.com\/avatar\/09bacc0294abee1322a23ab4bc6a0330dd4cb4df707dc9d0b0efeba6c109608b?s=96&d=mm&r=g","caption":"admin"},"sameAs":["http:\/\/pheonixsolutions.com\/grow"],"url":"https:\/\/pheonixsolutions.com\/grow\/author\/admin\/"}]}},"_links":{"self":[{"href":"https:\/\/pheonixsolutions.com\/grow\/wp-json\/wp\/v2\/posts\/191","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/pheonixsolutions.com\/grow\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/pheonixsolutions.com\/grow\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/pheonixsolutions.com\/grow\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/pheonixsolutions.com\/grow\/wp-json\/wp\/v2\/comments?post=191"}],"version-history":[{"count":1,"href":"https:\/\/pheonixsolutions.com\/grow\/wp-json\/wp\/v2\/posts\/191\/revisions"}],"predecessor-version":[{"id":192,"href":"https:\/\/pheonixsolutions.com\/grow\/wp-json\/wp\/v2\/posts\/191\/revisions\/192"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/pheonixsolutions.com\/grow\/wp-json\/wp\/v2\/media\/1996"}],"wp:attachment":[{"href":"https:\/\/pheonixsolutions.com\/grow\/wp-json\/wp\/v2\/media?parent=191"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/pheonixsolutions.com\/grow\/wp-json\/wp\/v2\/categories?post=191"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/pheonixsolutions.com\/grow\/wp-json\/wp\/v2\/tags?post=191"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}