How to use secure Remote Desktop Protocol (RDP) to access CentOS servers

How to use the secure Remote Desktop Protocol (RDP) to access CentOS server

Remote Desktop Protocol (RDP) is a protocol for remote control of computers and is widely used on Windows operating systems. But for CentOS servers, the RDP protocol is not supported by default. In this article, we will introduce how to use the secure RDP protocol to access a CentOS server and provide relevant code examples.

1. Install xrdp service
   First, we need to install a software package called xrdp, which can support the RDP protocol on the CentOS server. Execute the following command in the terminal to install the xrdp service:

sudo yum install xrdp -y

2. Start the xrdp service
   After the installation is completed, we need to start the xrdp service. Execute the following command in the terminal:

sudo systemctl start xrdp

3. Set the xrdp service to start automatically at boot
   In order to ensure that the xrdp service starts automatically after the server restarts, we need to set it to start automatically at boot . Execute the following command:

sudo systemctl enable xrdp

4. Adjust firewall settings
   By default, the firewall on the CentOS server may block RDP connections. We need to configure the firewall to allow RDP connections. Execute the following command:

sudo firewall-cmd --permanent --add-port=3389/tcp
sudo firewall-cmd --reload

5. Create a new user for RDP login
   In order to increase security, we can create a new user specifically for RDP login. Execute the following command to create a new user named rdpuser (can be replaced with your own username):

sudo adduser rdpuser
sudo passwd rdpuser

6. Grant user RDP access
   Next, we need to add the new The user is added to a special group called "tsusers" to grant it access to xrdp. Execute the following command:

sudo usermod -aG tsusers rdpuser

7. Configure RDP login session
   Open the file "/etc/xrdp/xrdp.ini" for configuration. Find the following lines and comment them out:

# security_layer = auto

Add the following two lines to enable encryption:

security_layer = tls
crypto_policy = layers

8. Restart the xrdp service
   After completing the above configuration, we The xrdp service needs to be restarted for it to take effect. Execute the following command:

sudo systemctl restart xrdp

Now, we have successfully configured the CentOS server to support secure RDP connections. You can use any standard RDP client to connect to the server's IP address, logging in by specifying a username and password.

Please note that for enhanced security, it is recommended to use certificates or keys for authentication. If you want to further strengthen security, you can refer to the relevant documentation to learn how to configure an SSL certificate.

Summary:
This article introduces how to use the secure RDP protocol to access the CentOS server. We install the xrdp service and configure it accordingly so that the CentOS server supports the RDP protocol. Additionally, we also covered how to create a new user and grant it RDP access. With these steps, we can achieve secure remote access to CentOS servers.

Reference code:

import paramiko

def rdp_login(ip, username, password):
    # 创建SSH客户端
    client = paramiko.SSHClient()
    client.set_missing_host_key_policy(paramiko.AutoAddPolicy())

    try:
        # 连接服务器
        client.connect(ip, username=username, password=password)
        print("RDP登录成功！")
    except paramiko.AuthenticationException:
        print("RDP登录失败：用户名或密码错误。")
    except paramiko.SSHException as e:
        print("RDP登录失败：" + str(e))
    except paramiko.ssh_exception.NoValidConnectionsError as e:
        print("RDP登录失败：" + str(e))
    finally:
        # 关闭连接
        client.close()

# 示例：使用RDP登录到CentOS服务器
rdp_login("192.168.0.100", "rdpuser", "password")

In order to use the above code, you need to install Python's paramiko library. You can install it by executing the following command:

pip install paramiko

Please note that the sample code is only used to demonstrate how to use the paramiko library for RDP login. In actual situations, we recommend using more powerful tools such as PyWinRM or Ansible for remote server management.

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