Changing the default SSH port (22) is a simple but effective security measure that helps reduce automated attacks and unauthorised access attempts. This guide explains how to safely change your SSH port on a Linux server and avoid lockouts.<\/p>\n
By default, all Linux servers use port 22 for SSH. Attackers often scan this port to attempt brute-force logins.<\/p>\n
Changing <\/a>the port:<\/p>\n Before starting:<\/p>\n Step 1: Choose a New SSH Port<\/p>\n Step 2: Update the SSH Configuration<\/p>\n Step 3: Adjust Firewall Rules<\/p>\n Step 4: Restart SSH Service<\/p>\n Step 5: Test the New SSH Port<\/p>\n Open a new terminal window <\/a>(keep the old one open in case of errors):<\/p>\n If the login is successful, the new port is active.<\/p>\n Cannot Connect After Changing Port?<\/p>\n After changing the SSH port, also implement the following security measures:<\/p>\n In this manner, changing your SSH port adds an extra layer of protection against automated attacks. Combine it with key security measures, SSH keys, disabling root login, Fail2Ban, and regular updates, to keep your server secure and stable.<\/p>\n If you need any help, our support team is always available to assist you.<\/p>\n Want to go further with SSH security? Learn How to modify the SSH server port number<\/a><\/strong><\/em><\/p>\n","protected":false},"excerpt":{"rendered":" Changing the default SSH port (22) is a simple but effective security measure that helps reduce automated attacks and unauthorised access attempts. This guide explains how to safely change your…<\/p>\n\n
Prerequisites<\/strong><\/h3>\n
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Steps to Change the SSH Port<\/strong><\/h3>\n
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\n1024 \u2013 65535<\/li>\n
\nUse 2222 or 49152<\/li>\n<\/ol>\n\n
sudo nano \/etc\/ssh\/sshd_config<\/pre>\n<\/li>\n
#Port 22<\/pre>\n<\/li>\n
Port 2222<\/pre>\n<\/li>\n
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sudo ufw allow 2222\/tcp\r\nsudo ufw delete allow 22\/tcp<\/pre>\n<\/li>\n
sudo firewall-cmd --add-port=2222\/tcp \u2013permanent\r\nsudo firewall-cmd --remove-port=22\/tcp \u2013permanent\r\nsudo firewall-cmd \u2013reload<\/pre>\n<\/li>\n
sudo iptables -A INPUT -p tcp --dport 2222 -j ACCEPT\r\nsudo iptables -A INPUT -p tcp --dport 22 -j DROP<\/pre>\n<\/li>\n<\/ol>\n
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sudo systemctl restart sshd<\/pre>\n<\/li>\n
sudo systemctl restart sshd.service<\/pre>\n<\/li>\n<\/ol>\n
ssh -p 2222 user@your_server_ip<\/pre>\n
Troubleshooting<\/strong><\/h3>\n
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sudo sshd -t<\/pre>\n<\/li>\n
Security Best Practices (Recommended)<\/strong><\/h3>\n
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Conclusion<\/strong><\/h3>\n
\nA Linux VPS Hosting<\/a> solution provides full root access and the flexibility needed to manage SSH settings, firewall rules and secure remote administration.<\/div>\n