Enable SSH on CentOS 7: Step-by-Step Guide

To enable SSH remote login on CentOS 7, you can follow the steps below:

1. Make sure your CentOS 7 system has the SSH server installed. If it is not installed, you can use the following command to install the OpenSSH server:

sudo yum install openssh-server

1. Start the SSH service and set it to automatically start at system boot.

sudo systemctl start sshd
sudo systemctl enable sshd

1. Ensure that the firewall allows SSH connections. You can run the following command to add a rule that allows SSH traffic through the firewall:

sudo firewall-cmd --zone=public --add-service=ssh --permanent
sudo firewall-cmd --reload

1. Ensure that SELinux allows SSH connections. You can run the following command to modify the SELinux policy to allow SSH connections:

sudo setsebool -P ssh_sys_admin on

1. Make sure you are aware of the IP address of your CentOS 7 system. You can use the following command to view the system’s IP address:

ip addr show

Now, you should be able to connect to your CentOS 7 system using an SSH client. You can use the following command:

ssh username@ip_address

Please note that “username” refers to your username on the CentOS system, and “ip_address” is the IP address of your CentOS system. Once connected successfully, you will need to enter a password for authentication.