How and Why to Change Default SSH Port

Changing the default SSH port will prevent automated attacks that don't spend the time to rotate ports when targeting a Linux Server. To protect your server from a brute force attack, you should change the default SSH port to something else.

1. What is default SSH port?
2. Which file should you edit to change the default port for SSH?
3. Should I use default ports?
4. Which SSH port should I use?
5. Should I change the default SSH port?
6. Can we change SSH port?
7. How do I change my default port?
8. What does changing SSH port do?
9. How do I change my SFTP port?
10. Is default a port?
11. What is the default port?
12. What happens if you change your port?

What is default SSH port?

By default, the SSH server still runs in port 22.

Which file should you edit to change the default port for SSH?

When we are logged into the server we can change Default SSH port by editing sshd_config file. It is a good practice to have a backup before we make any changes in this file. The following command will create a backup file of sshd_config file.

Should I use default ports?

YES, it is still useful. Changing default ports has one real purpose only: defend against automated scans/attacks, if you database server is open towards hosts which might get compromised.

Which SSH port should I use?

You can configure the port numbers to use for SSH and Telnet connections: The default port for SSH client connections is 22; to change this default, enter a port number between 1024 and 32,767. The default port for Telnet client connections is 23; to change this default, enter a port number between 1024 and 32,767.

Should I change the default SSH port?

Changing the default SSH port will prevent automated attacks that don't spend the time to rotate ports when targeting a Linux Server. To protect your server from a brute force attack, you should change the default SSH port to something else.

Can we change SSH port?

Changing the SSH port number

Log in to the server as root using SSH. Open the /etc/ssh/sshd_config file in your preferred text editor (nano, vi, etc.). ... Change 7822 to the new port number that you want to use. Save the changes to the /etc/ssh/sshd_config file, and then exit the text editor.

How do I change my default port?

In this article

1. Start the registry editor. ...
2. Navigate to the following registry subkey: HKEY_LOCAL_MACHINE\System\CurrentControlSet\Control\Terminal Server\WinStations\RDP-Tcp.
3. Find PortNumber.
4. Click Edit > Modify, and then click Decimal.
5. Type the new port number, and then click OK.

What does changing SSH port do?

By default, SSH listens on port 22. Changing the default SSH port adds an extra layer of security to your server by reducing the risk of automated attacks. This tutorial explains how to change the default SSH port in Linux. We will also show you how to configure your firewall to allow access to the new SSH port.

How do I change my SFTP port?

Changing the SFTP Port

1. Choosing a New Port Number. In Linux, port numbers below 1024 are reserved for well-known services and can only be bound to by root. ...
2. Adjusting Firewall. Before changing the SFTP/SSH port, you'll need to open the new port in your firewall. ...
3. Configuring SFTP/SSH.

Is default a port?

Default port numbers

What is the default port?

Port numbers are sometimes seen in web or other uniform resource locators (URLs). By default, HTTP uses port 80 and HTTPS uses port 443, but a URL like http://www.example.com:8080/path/ specifies that the web browser connects instead to port 8080 of the HTTP server.

What happens if you change your port?

On it's own, changing to a different port might gain you a couple of seconds while it's searched for, hence gaining you nothing in real terms. However, if you combine the use of non-standard ports together with anti-portscan measures it can give a really worthwhile increase in security.