{"id":6495,"date":"2026-05-27T13:49:09","date_gmt":"2026-05-27T13:49:09","guid":{"rendered":"https:\/\/www.hostitsmart.com\/manage\/knowledgebase\/?p=6495"},"modified":"2026-05-27T13:49:11","modified_gmt":"2026-05-27T13:49:11","slug":"how-to-change-ssh-port-in-linux","status":"publish","type":"post","link":"https:\/\/www.hostitsmart.com\/manage\/knowledgebase\/507\/change-ssh-port-in-linux.html","title":{"rendered":"How to Change SSH Port in Linux?"},"content":{"rendered":"\n<p>When you launch a Linux server, one of the first services running quietly in the background is SSH (Secure Shell). It is the gateway administrators use to remotely access, manage, configure, and troubleshoot servers from anywhere in the world.<\/p>\n\n\n\n<p>By default, SSH works on Port 22. While this standard setup is convenient, it also becomes one of the most commonly targeted ports by hackers and automated bots. Thousands of malicious login attempts scan Port 22 every single day, looking for weak credentials and poorly secured servers.<\/p>\n\n\n\n<p>Changing the default SSH port is a small configuration tweak, but it can significantly reduce automated attacks and unnecessary login attempts. It is not a replacement for proper security practices, but it acts as an additional security layer that makes your server less visible to automated scans.<\/p>\n\n\n\n<p><strong>In this knowledgebase article, you will learn:<\/strong><\/p>\n\n\n\n<ul>\n  <li style=\"margin-left: 24px;\">Why changing the SSH Port is important<\/li>\n  <li style=\"margin-left: 24px;\">How to safely change the SSH Port in Linux<\/li>\n  <li style=\"margin-left: 24px;\">Firewall configuration steps<\/li>\n  <li style=\"margin-left: 24px;\">Testing the new SSH Port properly<\/li>\n  <li style=\"margin-left: 24px;\">Important tips to avoid locking yourself out<\/li>\n<\/ul>\n\n\n\n<p>Whether you are using CentOS, AlmaLinux, Rocky Linux, Ubuntu, or Debian, this guide will help you complete the process safely and correctly.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-wide\"\/>\n\n\n\n<p><strong>Also Read: <\/strong><a href=\"https:\/\/www.hostitsmart.com\/manage\/knowledgebase\/498\/setup-ftp-on-linux-server.html\"><strong>How to Set Up FTP on Linux\u200b?<\/strong><\/a><strong>&nbsp;<\/strong><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-wide\"\/>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Why to Change the Default SSH Port?<\/strong><\/h2>\n\n\n\n<p>Changing the default SSH Port helps reduce automated attacks and improves server hardening.<\/p>\n\n\n\n<p style=\"margin-left: 24px;\"><strong>1. Reduces Automated Bot Attacks<\/strong><\/p>\n<p>Most bots continuously scan Port 22 for vulnerable servers. Moving SSH to another port instantly avoids many automated attacks.<\/p>\n\n<p style=\"margin-left: 24px;\"><strong>2. Cleaner Server Logs<\/strong><\/p>\n<p>Your authentication logs will contain fewer brute-force login attempts.<\/p>\n\n<p style=\"margin-left: 24px;\"><strong>3. Adds an Extra Security Layer<\/strong><\/p>\n<p>It creates an additional obstacle for attackers who rely on default configurations.<\/p>\n\n<p style=\"margin-left: 24px;\"><strong>4. Better Server Hardening<\/strong><\/p>\n<p>Changing default services is considered a basic server security practice.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-wide\"\/>\n\n\n\n<p><strong>Also Read: <\/strong><a href=\"https:\/\/www.hostitsmart.com\/manage\/knowledgebase\/494\/change-root-password-in-linux.html\"><strong>How to Change Root Password in Linux?<\/strong><\/a><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-wide\"\/>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Important Things to Know Before You Start<\/strong><\/h2>\n\n\n\n<p><strong>Before changing the SSH Port, keep these points in mind:<\/strong><\/p>\n\n\n\n<ul style=\"list-style: none;\">\n  <li style=\"margin-left: 24px;\">\u2794 Always keep your current SSH session open.<\/li>\n  <li style=\"margin-left: 24px;\">\u2794 Open the new port in the firewall first.<\/li>\n  <li style=\"margin-left: 24px;\">\u2794 Test the new SSH Port before closing the old session.<\/li>\n  <li style=\"margin-left: 24px;\">\u2794 Choose a port number above 1024.<\/li>\n  <li style=\"margin-left: 24px;\">\u2794 Avoid commonly used ports to prevent conflicts.<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-wide\"\/>\n\n\n\n<p><strong>Also Read: <\/strong><a href=\"https:\/\/www.hostitsmart.com\/manage\/knowledgebase\/486\/kill-process-in-linux.html\"><strong>How to Kill a Process in Linux?<\/strong><\/a><strong>&nbsp;<\/strong><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-wide\"\/>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Steps to Change SSH Port in Linux<\/strong><\/h2>\n\n\n\n<p style=\"margin-left: 24px;\">\n  <strong style=\"font-size:18px;\">\u27a2 Step 1: Open the New SSH Port in the Firewall<\/strong>\n<\/p>\n\n\n\n<p>Before changing the SSH configuration, the new port must be allowed through the firewall. Otherwise, the server may block incoming SSH connections on the new port.<\/p>\n\n\n\n<p>In this example, we will use <strong>2222<\/strong> as the new SSH Port.<\/p>\n\n\n\n<p style=\"margin-left: 24px;\"><strong>\u2605 For RHEL-Based Systems (CentOS, AlmaLinux, Rocky Linux)<\/strong><\/p>\n<p style=\"margin-left: 24px;\"><strong>\u2794<\/strong> Run the following command:<\/p>\n\n\n\n<figure class=\"wp-block-table\"><button class=\"copy-btn\" onclick=\"copyCommand(this)\">\ud83d\udccb<\/button><span class=\"copy-msg\">Copied!<\/span>\n    <table class=\"has-fixed-layout\">\n        <tbody>\n            <tr>\n                <td class=\"kb_firewall\"><strong><strong>firewall-cmd &#8211;add-port=2222\/tcp &#8211;permanent<\/strong><\/strong><\/td>\n            <\/tr>\n        <\/tbody>\n    <\/table>\n<\/figure>\n\n\n\n<p><strong>What This Command Does<\/strong><\/p>\n\n\n\n<ul>\n  <li style=\"margin-left: 24px;\">Opens TCP Port 2222 permanently<\/li>\n  <li style=\"margin-left: 24px;\">Allows remote SSH connections through the new port<\/li>\n  <li style=\"margin-left: 24px;\">Saves firewall rules even after reboot<\/li>\n<\/ul>\n\n\n\n<p>Now reload the firewall:<\/p>\n\n\n\n<figure class=\"wp-block-table\"><button class=\"copy-btn\" onclick=\"copyCommand(this)\">\ud83d\udccb<\/button><span class=\"copy-msg\">Copied!<\/span>\n    <table class=\"has-fixed-layout\">\n        <tbody>\n            <tr>\n                <td class=\"kb_firewall\"><strong><strong>firewall-cmd &#8211;reload<\/strong><\/strong><\/td>\n            <\/tr>\n        <\/tbody>\n    <\/table>\n<\/figure>\n\n\n\n<p>Reloading applies the newly added firewall rules immediately.<\/p>\n\n\n\n<p style=\"margin-left: 24px;\"><strong>\u2605 For Ubuntu \/ Debian Systems<\/strong><\/p>\n<p style=\"margin-left: 24px;\"><strong>\u2794<\/strong> Run the following command:<\/p>\n\n\n\n<figure class=\"wp-block-table\"><button class=\"copy-btn\" onclick=\"copyCommand(this)\">\ud83d\udccb<\/button><span class=\"copy-msg\">Copied!<\/span>\n    <table class=\"has-fixed-layout\">\n        <tbody>\n            <tr>\n                <td class=\"kb_firewall\"><strong><strong>ufw allow 2222\/tcp<\/strong><\/strong><\/td>\n            <\/tr>\n        <\/tbody>\n    <\/table>\n<\/figure>\n\n\n\n<p>Now reload the UFW<\/p>\n\n\n\n<figure class=\"wp-block-table\"><button class=\"copy-btn\" onclick=\"copyCommand(this)\">\ud83d\udccb<\/button><span class=\"copy-msg\">Copied!<\/span>\n    <table class=\"has-fixed-layout\">\n        <tbody>\n            <tr>\n                <td class=\"kb_firewall\"><strong><strong>Ufw reload<\/strong><\/strong><\/td>\n            <\/tr>\n        <\/tbody>\n    <\/table>\n<\/figure>\n\n\n\n<p><strong>What This Command Does<\/strong><\/p>\n\n\n\n<ul style=\"list-style: none;\">\n  <li style=\"margin-left: 24px;\">\u2794 Allows incoming traffic on Port 2222<\/li>\n  <li style=\"margin-left: 24px;\">\u2794 Updates UFW firewall rules instantly<\/li>\n<\/ul>\n\n\n\n<div style=\"border: 1px solid #faf4ff; padding: 18px 24px; background-color: #faf4ff; width: 730px;\">\n  <p style=\"margin: 0 0 10px 0;\">\n    <strong>\u2605 Quick Tip<\/strong>\n  <\/p>\n\n  <p style=\"margin: 0 0 10px 0;\">\n    Choose a port number that is:\n  <\/p>\n\n  <ul>\n    <li>Above 1024<\/li>\n    <li>Easy for you to remember<\/li>\n    <li>Not already used by another service<\/li>\n  <\/ul>\n\n  <p style=\"margin: 10px 0;\">\n    <strong>Example:<\/strong>\n  <\/p>\n\n  <ul>\n    <li>2222<\/li>\n    <li>2200<\/li>\n    <li>2022<\/li>\n  <\/ul>\n<\/div>\n\n\n\n<p style=\"margin-top: 16px; margin-left: 24px;\">\n  <strong style=\"font-size:18px;\">\u27a2 Step 2: Open the New SSH Port in the Firewall<\/strong>\n<\/p>\n\n\n\n<p>Now it is time to tell the SSH service to listen on the new port.<\/p>\n\n\n\n<p style=\"margin-left:24px;\"><strong>\u2794<\/strong> Open the SSH configuration file:<\/p>\n\n<figure class=\"wp-block-table\"><button class=\"copy-btn\" onclick=\"copyCommand(this)\">\ud83d\udccb<\/button><span class=\"copy-msg\">Copied!<\/span>\n    <table class=\"has-fixed-layout\">\n        <tbody>\n            <tr>\n                <td class=\"kb_firewall\"><strong><strong>nano \/etc\/ssh\/sshd_config<\/strong><\/strong><\/td>\n            <\/tr>\n        <\/tbody>\n    <\/table>\n<\/figure>\n\n<p style=\"margin-left:24px;\"><strong>\u2794<\/strong> In that, find this line <strong>\u201c#Port 22\u201d<\/strong><\/p>\n\n\n\n<p>On many servers, this line is commented out with a <strong>#<\/strong>.<\/p>\n\n\n\n<p style=\"margin-left:24px;\"><strong>\u2794<\/strong> You have to change it to:<\/p>\n<figure class=\"wp-block-table\"><button class=\"copy-btn\" onclick=\"copyCommand(this)\">\ud83d\udccb<\/button><span class=\"copy-msg\">Copied!<\/span>\n    <table class=\"has-fixed-layout\">\n        <tbody>\n            <tr>\n                <td class=\"kb_firewall\"><strong><strong>Port 2222<\/strong><\/strong><\/td>\n            <\/tr>\n        <\/tbody>\n    <\/table>\n<\/figure>\n\n\n\n<div style=\"border: 1px solid #faf4ff; padding: 18px 24px; background-color: #faf4ff; width: 730px;\">\n  <p style=\"margin: 0 0 10px 0;\">\n    <strong>\u2605 Important Tip<\/strong>\n  <\/p>\n\n  <p style=\"margin: 0 0 10px 0;\">\n    Some configuration files may already contain multiple Port entries.\n  <\/p>\n\n  <p style=\"margin: 0 0 10px 0;\">\n    <strong>If multiple ports are defined:<\/strong>\n  <\/p>\n\n  <ul>\n    <li>SSH may listen on all listed ports<\/li>\n    <li>Remove unnecessary entries if you want only one active SSH Port<\/li>\n  <\/ul>\n<\/div>\n\n\n\n<p style=\"margin-top: 16px; margin-left: 24px;\">\n  <strong style=\"font-size:18px;\">\u27a2 Step 3: Restart SSH Service<\/strong>\n<\/p>\n\n\n\n<p>After saving the configuration file, restart the SSH service so the changes can take effect.<\/p>\n\n\n\n<p style=\"margin-left: 24px;\">\n  <strong>\u2605 For RHEL-Based Systems<\/strong>\n<\/p>\n<figure class=\"wp-block-table\"><button class=\"copy-btn\" onclick=\"copyCommand(this)\">\ud83d\udccb<\/button><span class=\"copy-msg\">Copied!<\/span>\n    <table class=\"has-fixed-layout\">\n        <tbody>\n            <tr>\n                <td class=\"kb_firewall\"><strong><strong>systemctl restart sshd<\/strong><\/strong><\/td>\n            <\/tr>\n        <\/tbody>\n    <\/table>\n<\/figure>\n\n\n\n<p style=\"margin-left: 24px;\">\n  <strong>\u2605 For Ubuntu\/Debian<\/strong>\n<\/p>\n<figure class=\"wp-block-table\"><button class=\"copy-btn\" onclick=\"copyCommand(this)\">\ud83d\udccb<\/button><span class=\"copy-msg\">Copied!<\/span>\n    <table class=\"has-fixed-layout\">\n        <tbody>\n            <tr>\n                <td class=\"kb_firewall\"><strong><strong>systemctl restart ssh<\/strong><\/strong><\/td>\n            <\/tr>\n        <\/tbody>\n    <\/table>\n<\/figure>\n\n\n\n<p><strong>Why Restarting is Necessary<\/strong><\/p>\n\n\n\n<p>The SSH service reads its configuration only during startup. Restarting reloads the updated port configuration.<\/p>\n\n\n\n<p><strong>Without restarting:<\/strong><\/p>\n\n\n\n<ul>\n  <li style=\"margin-left: 24px;\">SSH will continue using the old port<\/li>\n  <li style=\"margin-left: 24px;\">Your changes will not apply<\/li>\n<\/ul>\n\n\n\n<p style=\"margin-top: 16px; margin-left: 24px;\">\n  <strong style=\"font-size:18px;\">\u27a2 Step 4: Test the New SSH Port<\/strong>\n<\/p>\n\n\n\n<p>Now, you have to test the new SSH Port from a new terminal window.<\/p>\n\n\n\n<figure class=\"wp-block-table\"><button class=\"copy-btn\" onclick=\"copyCommand(this)\">\ud83d\udccb<\/button><span class=\"copy-msg\">Copied!<\/span>\n    <table class=\"has-fixed-layout\">\n        <tbody>\n            <tr>\n                <td class=\"kb_firewall\"><strong><strong>ssh root@your-server-ip -p 2222<\/strong><\/strong><\/td>\n            <\/tr>\n        <\/tbody>\n    <\/table>\n<\/figure>\n\n\n\n<p>Replace<strong> your-server-ip <\/strong>with the IP address you have.<\/p>\n\n\n\n<div style=\"border: 1px solid #faf4ff; padding: 18px 24px; background-color: #faf4ff; width: 730px;\">\n  <p style=\"margin: 0 0 10px 0;\">\n    <strong>\u2605 VERY IMPORTANT<\/strong>\n  <\/p>\n\n  <p style=\"margin: 0 0 10px 0;\">\n    Do NOT close your existing SSH session yet.\n  <\/p>\n\n  <p style=\"margin: 0 0 10px 0;\">\n    Keep the current session active until:\n  <\/p>\n\n  <ul>\n    <li>You successfully log in using the new port<\/li>\n    <li>You confirm server access is working perfectly<\/li>\n  <\/ul>\n\n  <p style=\"margin: 10px 0 0 0;\">\n    This helps prevent accidental server lockout.\n  <\/p>\n<\/div>\n\n\n\n<p><strong>How to Verify SSH is Listening on the New Port<\/strong><\/p>\n\n\n\n<p style=\"margin-left:24px;\"><strong>\u2794<\/strong> You can verify active listening ports using:<\/p>\n\n\n\n<figure class=\"wp-block-table\"><button class=\"copy-btn\" onclick=\"copyCommand(this)\">\ud83d\udccb<\/button><span class=\"copy-msg\">Copied!<\/span>\n    <table class=\"has-fixed-layout\">\n        <tbody>\n            <tr>\n                <td class=\"kb_firewall\"><strong><strong>ss -tulpn | grep ssh<\/strong><\/strong><\/td>\n            <\/tr>\n        <\/tbody>\n    <\/table>\n<\/figure>\n\n\n\n<p style=\"margin-left:280px;\"><strong>OR<\/strong>\n<figure class=\"wp-block-table\"><button class=\"copy-btn\" onclick=\"copyCommand(this)\">\ud83d\udccb<\/button><span class=\"copy-msg\">Copied!<\/span>\n    <table class=\"has-fixed-layout\">\n        <tbody>\n            <tr>\n                <td class=\"kb_firewall\"><strong><strong>netstat -tulpn | grep ssh<\/strong><\/strong><\/td>\n            <\/tr>\n        <\/tbody>\n    <\/table>\n<\/figure>\n\n\n\n<p>You should see something similar to:<\/p>\n\n\n\n<figure class=\"wp-block-table\"><button class=\"copy-btn\" onclick=\"copyCommand(this)\">\ud83d\udccb<\/button><span class=\"copy-msg\">Copied!<\/span>\n    <table class=\"has-fixed-layout\">\n        <tbody>\n            <tr>\n                <td class=\"kb_firewall\"><strong><strong>0.0.0.0:2222<\/strong><\/strong><\/td>\n            <\/tr>\n        <\/tbody>\n    <\/table>\n<\/figure>\n\n\n\n<p>This confirms SSH is now listening on <strong>Port 2222<\/strong>.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-wide\"\/>\n\n\n\n<p><strong>Also Read: <\/strong><a href=\"https:\/\/www.hostitsmart.com\/manage\/knowledgebase\/485\/rename-folder-in-linux.html\"><strong>How to Rename a Folder in Linux\u200b?<\/strong><\/a><strong>&nbsp;<\/strong><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-wide\"\/>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Common Problems You Can Face After Changing SSH Port<\/strong><\/h2>\n\n\n\n<p style=\"margin-left:24px;\"><strong>1. Connection Refused<\/strong><\/p>\n\n<p><strong>Possible Reasons<\/strong><\/p>\n\n<ul style=\"margin-left: 24px;\">\n  <li>Firewall port not opened<\/li>\n  <li>SSH service not restarted<\/li>\n  <li>Wrong port number used<\/li>\n<\/ul>\n\n<p style=\"margin-left:24px;\"><strong>2. Server Lockout<\/strong><\/p>\n\n<p><strong>Possible Reasons<\/strong><\/p>\n\n<ul style=\"margin-left: 24px;\">\n  <li>Closed old SSH session too early<\/li>\n  <li>Typo in SSH configuration<\/li>\n  <li>Firewall misconfiguration<\/li>\n<\/ul>\n\n<p style=\"margin-left:24px;\"><strong>3. SELinux Blocking the Port (RHEL Systems)<\/strong><\/p>\n\n\n\n<p>On some RHEL-based servers, SELinux may block custom SSH ports.<\/p>\n\n\n\n<p style=\"margin-left:24px;\"><strong>\u2794<\/strong> Run the following command:<\/p>\n<figure class=\"wp-block-table\"><button class=\"copy-btn\" onclick=\"copyCommand(this)\">\ud83d\udccb<\/button><span class=\"copy-msg\">Copied!<\/span>\n    <table class=\"has-fixed-layout\">\n        <tbody>\n            <tr>\n                <td class=\"kb_firewall\"><strong><strong>semanage port -a -t ssh_port_t -p tcp 2222<\/strong><\/strong><\/td>\n            <\/tr>\n        <\/tbody>\n    <\/table>\n<\/figure>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-wide\"\/>\n\n\n\n<p><strong>Also Read: <\/strong><a href=\"https:\/\/www.hostitsmart.com\/manage\/knowledgebase\/484\/check-memory-usage-in-linux.html\"><strong>How to Check Memory in Linux?<\/strong><\/a><strong>&nbsp;<\/strong><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-wide\"\/>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Final Thoughts<\/strong><\/h2>\n\n\n\n<p>Changing the default SSH Port in Linux is one of the simplest server hardening techniques you can implement. While it does not make your server<strong> \u201cinvisible,\u201d <\/strong>it greatly reduces automated scanning attempts and unnecessary attacks targeting Port 22.<\/p>\n\n\n\n<p><strong>The key to performing this safely is:<\/strong><\/p>\n\n\n\n<ul style=\"margin-left: 24px;\">\n  <li>Open firewall rules first<\/li>\n  <li>Edit the SSH configuration carefully<\/li>\n  <li>Restart the SSH service<\/li>\n  <li>Test the new connection before logging out<\/li>\n<\/ul>\n\n\n\n<p>A few minutes spent securing SSH today can save hours of troubleshooting and security issues later.<\/p>\n\n\n\n<p>If you manage VPS servers, dedicated servers, or cloud environments regularly, changing the default SSH Port should become part of your standard server setup checklist.<\/p>\n\n\n\n<script>\nfunction copyCommand(btn) {\n  const td = btn.parentElement.querySelector(\"td.kb_firewall\");\n  const text = td.innerText.trim();\n\n  navigator.clipboard.writeText(text).then(() => {\n    const msg = btn.parentElement.querySelector(\".copy-msg\");\n    msg.style.display = \"inline-block\";\n    setTimeout(() => msg.style.display = \"none\", 1000);\n  });\n}\n<\/script>\n","protected":false},"excerpt":{"rendered":"<p>When you launch a Linux server, one of the first services running quietly in the background is SSH (Secure Shell). It is the gateway administrators use to remotely access, manage, configure, and troubleshoot servers from anywhere in the world. By default, SSH works on Port 22. While this standard setup is convenient, it also becomes [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[49],"tags":[],"class_list":["post-6495","post","type-post","status-publish","format-standard","hentry","category-vps"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v24.2 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>How to Change SSH Port in Linux?<\/title>\n<meta name=\"description\" content=\"Learn to change the default SSH Port in Linux safely &amp; improve server security with step-by-step instructions, troubleshooting tips, and best practices.\" \/>\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.hostitsmart.com\/manage\/knowledgebase\/507\/change-ssh-port-in-linux.html\" 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