{"id":56440,"date":"2020-06-10T09:32:03","date_gmt":"2020-06-10T13:32:03","guid":{"rendered":"https:\/\/www.inmotionhosting.com\/support\/?p=56440"},"modified":"2025-03-06T17:02:47","modified_gmt":"2025-03-06T22:02:47","slug":"how-to-open-a-port-in-firewalld","status":"publish","type":"post","link":"https:\/\/www.inmotionhosting.com\/support\/security\/how-to-open-a-port-in-firewalld\/","title":{"rendered":"How to Open a Port in Firewalld"},"content":{"rendered":"
\"How<\/figure>\n\n\n\n

After you install Firewalld<\/a>, the first thing you\u2019ll likely want to do is open a port to connect with web applications on your Linux server. Only dhcp6-client and SSH are enabled by default. However, opening ports with Firewalld is an easy process. The first reason is that the commands are straightforward and easy to remember.<\/p>\n\n\n\n

The second reason is that Firewalld allows you to manage well-known ports as predefined \u201cservices\u201d for a more human-readable configuration. For example, instead of using 443\/tcp<\/code>, you can simply use the https<\/code> service. Since services are easier to read than numbers and protocols, it\u2019s best to check if a port is listed as a service before using the port option.<\/p>\n\n\n\n

Below, we cover how to open a port in Firewalld<\/a> and check open ports<\/a>.<\/p>\n\n\n\n

Open a Port in Firewalld<\/h2>\n\n\n\n
    \n
  1. Log into SSH<\/a><\/li>\n\n\n\n
  2. Check if the application port is defined as a service (e.g. IMAPS, Kerberos, MySQL): 
    firewall-cmd -get-services<\/pre><\/li>\n\n\n\n
  3. If the service is listed, whitelist the service permanently<\/strong> in the current zone<\/a>: 
    sudo firewall-cmd --permanent --add-service=SERVICE<\/pre>
    If not, open the port permanently<\/strong> by specifying the port number and protocol (TCP or UDP): 
    sudo firewall-cmd --permanent --add-port=1234\/tcp<\/pre><\/li>\n\n\n\n
  4. Reload Firewalld to apply changes:
    firewall-cmd --reload<\/pre>
    Reloading will remove \u2013-runtime changes<\/a> to apply the \u2013permanent configuration.<\/p><\/li>\n<\/ol>\n\n\n\n
    Check Open Ports in Firewalld<\/h2>\n\n\n\n
    After you whitelist ports and services, you should ensure your changes are accurate.<\/p>\n\n\n\n
      \n
    1. List whitelisted services in Firewalld:
      sudo firewall-cmd --list-services<\/pre><\/li>\n\n\n\n
    2. List currently open ports in Firewalld:
      sudo firewall-cmd --list-ports<\/pre><\/li>\n<\/ol>\n\n\n\n
      We recommend Certbot<\/a> for creating and maintaining free Let\u2019s Encrypt SSL certificates on non-cPanel cloud servers.<\/p>\n\n\n\n
      For more in-depth security configurations, check out our article covering Firewalld commands<\/a>. To learn more about VPS security, check out these 24 ways to harden your Linux server<\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":"
      After you install Firewalld, the first thing you’ll likely want to do is open a port to connect with web applications on your Linux server. Only dhcp6-client and SSH are enabled by default. However, opening ports with Firewalld is an easy process. The first reason is that the commands are straightforward and easy to remember. Read More ><\/a><\/p>\n","protected":false},"author":57014,"featured_media":129161,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[4299],"tags":[],"class_list":["post-56440","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-security"],"acf":[],"yoast_head":"\nHow to Open a Port in Firewalld | InMotion Hosting<\/title>\n<meta name=\"description\" content=\"Learn how to open a port in Firewalld with pre-defined services or port number and protocol. Then, be sure what ports are open on your Linux 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.inmotionhosting.com\/support\/security\/how-to-open-a-port-in-firewalld\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"How to Open a Port in Firewalld | InMotion Hosting\" \/>\n<meta property=\"og:description\" content=\"Learn how to open a port in Firewalld with pre-defined services or port number and protocol. Then, be sure what ports are open on your Linux server.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.inmotionhosting.com\/support\/security\/how-to-open-a-port-in-firewalld\/\" \/>\n<meta property=\"og:site_name\" content=\"InMotion Hosting Support Center\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/inmotionhosting\/\" \/>\n<meta property=\"article:published_time\" content=\"2020-06-10T13:32:03+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2025-03-06T22:02:47+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.inmotionhosting.com\/support\/wp-content\/uploads\/2020\/06\/open-port-firewalld.png\" \/>\n\t<meta property=\"og:image:width\" content=\"1200\" \/>\n\t<meta property=\"og:image:height\" content=\"630\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/png\" \/>\n<meta name=\"author\" content=\"InMotion Hosting Contributor\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@https:\/\/twitter.com\/InMotionHosting\" \/>\n<meta name=\"twitter:site\" content=\"@InMotionHosting\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"InMotion Hosting Contributor\" \/>\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\":\"Article\",\"@id\":\"https:\/\/www.inmotionhosting.com\/support\/security\/how-to-open-a-port-in-firewalld\/#article\",\"isPartOf\":{\"@id\":\"https:\/\/www.inmotionhosting.com\/support\/security\/how-to-open-a-port-in-firewalld\/\"},\"author\":{\"name\":\"InMotion Hosting Contributor\",\"@id\":\"https:\/\/www.inmotionhosting.com\/support\/#\/schema\/person\/f9a4fc454cd1df128ee8e898d30d4644\"},\"headline\":\"How to Open a Port in Firewalld\",\"datePublished\":\"2020-06-10T13:32:03+00:00\",\"dateModified\":\"2025-03-06T22:02:47+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/www.inmotionhosting.com\/support\/security\/how-to-open-a-port-in-firewalld\/\"},\"wordCount\":277,\"commentCount\":0,\"publisher\":{\"@id\":\"https:\/\/www.inmotionhosting.com\/support\/#organization\"},\"image\":{\"@id\":\"https:\/\/www.inmotionhosting.com\/support\/security\/how-to-open-a-port-in-firewalld\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/www.inmotionhosting.com\/support\/wp-content\/uploads\/2020\/06\/open-port-firewalld.png\",\"articleSection\":[\"Security\"],\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\/\/www.inmotionhosting.com\/support\/security\/how-to-open-a-port-in-firewalld\/#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.inmotionhosting.com\/support\/security\/how-to-open-a-port-in-firewalld\/\",\"url\":\"https:\/\/www.inmotionhosting.com\/support\/security\/how-to-open-a-port-in-firewalld\/\",\"name\":\"How to Open a Port in Firewalld | InMotion Hosting\",\"isPartOf\":{\"@id\":\"https:\/\/www.inmotionhosting.com\/support\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\/\/www.inmotionhosting.com\/support\/security\/how-to-open-a-port-in-firewalld\/#primaryimage\"},\"image\":{\"@id\":\"https:\/\/www.inmotionhosting.com\/support\/security\/how-to-open-a-port-in-firewalld\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/www.inmotionhosting.com\/support\/wp-content\/uploads\/2020\/06\/open-port-firewalld.png\",\"datePublished\":\"2020-06-10T13:32:03+00:00\",\"dateModified\":\"2025-03-06T22:02:47+00:00\",\"description\":\"Learn how to open a port in Firewalld with pre-defined services or port number and protocol. 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