RDP Port Change: Step-by-Step Guide for Secure Connection

Remote Desktop Protocol (RDP) is a widely used Microsoft protocol for remotely accessing computers over a network. However, when used with default settings, it can pose a security risk. In this article, you will learn why changing the RDP port is important and how to do it step by step.

Importance of Changing RDP Port and Security Vulnerabilities

RDP typically operates over the default port 3389. As a result, malicious individuals and bots can target this port to launch attacks. Changing the default port makes it more difficult for attackers to detect your RDP connection, reducing your attack surface.

One of the main security risks of using the default port is exposure to brute force attacks. Malicious actors can attempt to guess your RDP login credentials to gain unauthorized access to your system. Changing the port is a simple yet effective step to prevent such attacks.

Steps to Change RDP Port: Initial Setup

Before changing the RDP port, there are a few important preparation steps:

• Backup: Make a backup of your system before making any changes. This is important in case you need to revert any modifications.
• Firewall Rules: Add the new port number to your firewall. Otherwise, you may experience connection issues.
• Administrator Access: You need administrator privileges to change the RDP port.

Process to Change RDP Port on Windows

To change the RDP port on a Windows operating system, follow these steps:

1. Open Regedit: Type “regedit” in the Start menu to open the Registry Editor.
2. Navigate to the Registry Path: Go to the following path: HKEY_LOCAL_MACHINE\System\CurrentControlSet\Control\Terminal Server\WinStations\RDP-Tcp.
3. Edit the PortNumber Key: Double-click the “PortNumber” key and select the “Decimal” option. Then, enter your new port number.
4. Close the Registry Editor: After saving the changes, close the Registry Editor.
5. Restart the System: Restart your computer to apply the changes.

Post-Port Change Checks

After completing the port change, perform the following checks to ensure everything is working properly:

• Connection Test: Attempt an RDP connection using the new port number and verify that it works.
• Firewall Settings: Ensure the new port is open in your firewall rules.
• Log Files: Review connection logs and stay alert for any unusual attempts.

Additional Measures to Keep Your RDP Port Secure

Changing the port alone is not enough. Here are some additional steps to further secure your connection:

• Strong Passwords: Use strong and complex passwords for RDP login credentials.
• Two-Factor Authentication (2FA): If possible, add an extra layer of security by using two-factor authentication.
• IP Restrictions: Limit RDP access to specific IP addresses to restrict connections.
• Stay Updated: Regularly apply system updates to close any security vulnerabilities.

Frequently Asked Questions

• Does changing the RDP port really improve security?
  Yes, changing the default port makes it harder for attackers to detect the port and improves your security.
• What port number should I choose?
  You can choose a random port number between 1024 and 65535. However, make sure the port is not already in use by another application.
• What else can I do after changing the port?
  You can implement additional security measures such as strong passwords, two-factor authentication, and IP restrictions.