How enable root SSH login on RHEL or CentOS 7
SSH (Secure SHell) work on port number 22, which uses encryption to send data to remote host. Now a days we use it in place of Telnet. Files related to SSH configuration; /etc/ssh/sshd_config - OpenSSH server configuration file. /etc/ssh/ssh_config - OpenSSH client configuration file. ~/.ssh/ - Users ssh configuration directory. ~/.ssh/authorized_keys or ~/.ssh/authorized_keys - Lists the public keys (RSA or DSA) that can be used to log into the user’s account /etc/nologin - If this file exists, sshd refuses to let anyone except root log in. /etc/hosts.allow and /etc/hosts.deny : Access controls lists that should be enforced by tcp-wrappers are defined here. SSH default port : TCP 22 NOTE : After editing "sshd_config" file, please verify configuration and restart "sshd" service to come up with the enabled option. Verify your sshd_config file before restarting / reloading changes: #/usr/sbin/ss...