What is the method for configuring remote SSH on CentOS 7?

2 years ago
William Carter
1 minute

To set up remote access for SSH on CentOS 7, follow these steps:

  1. Make sure that CentOS 7 has OpenSSH server installed. You can use the following command to confirm if it is installed:
rpm -q openssh-server
  1. If OpenSSH server is not installed, you can use the following command to install it:
yum install -y openssh-server
  1. The configuration file for the SSH daemon is located at /etc/ssh/sshd_config.
vi /etc/ssh/sshd_config
  1. In the configuration file, locate the following lines and make sure their values are as shown below:
Port 22                        # SSH默认端口为22，可以根据需要修改
PermitRootLogin no             # 不允许root用户直接登录，可以根据需要修改
PasswordAuthentication yes    # 允许使用密码进行身份验证，可以根据需要修改
  1. If you want to allow the root user to log in, you can change the value of PermitRootLogin to yes.
  2. Save and close the file.
  3. Restart the SSH service to apply the configuration changes.
systemctl restart sshd
  1. Make sure the firewall allows SSH connections. You can use the following command to check the firewall status:
systemctl status firewalld

If the firewall is active, you can allow SSH connections using the following command.

firewall-cmd --add-service=ssh --permanent
firewall-cmd --reload

Now you should be able to remotely connect to CentOS 7 using SSH.

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