Configuring and Securing OpenSSH Service in Linux

Configuring and Securing OpenSSH Service in Linux

SSH (Secure Shell) is a protocol which facilitates secure communications between two systems using a client-server architecture and allows users to log in to server host systems remotely.

Configuring and Securing OpenSSH Service in Linux ( Suse , RHEL7 , RHEL8 and Ubuntu )

STARTING AN OPENSSH SERVER

What is SSH protocol in RHEL7 or RHEL8?

What is the default port for SSH and configuration file path in RHEL8?
How to change default SSH port number ?
How does port forwarding works in SSH ..?
How to disable root login for ssh server.?
How to Enable only Key based authentication..?
Is it possible to Login to remote SSH server without password.?

How do you access GUI using SSH connection ..?
What is the role of authorized_keys file .?
SSH Session idle timeout – ssh auto logout?

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