Q. I’ve CentOS Linux cpanel server. I’d like to turn off SFTP server but only allow SSH for root user. How do I trun off sftp server? A. OpenSSH / sshd reads configuration data from /etc/ssh/sshd_config. The file contains keyword-argument pairs, one per line. Lines starting with ‘#’ and empty lines are interpreted as comments. […]


I need to provide a remote access to my Ubuntu Linux server. How do I start / stop OR restart the ssh server under Ubuntu Linux operating system?


Q. How do I block access to root user over ssh session? A.. sshd (OpenSSH Daemon) is the daemon program for ssh. Server side ssh configuration is defined in /etc/ssh/sshd_config file. You need to use DenyUsers option to block access to root user. This option can be followed by a list of user name patterns, […]


Q. I’ve HP-UX installed on my HP UX UNIX server. But I’m not able to start or restart the OpenSSH ssh server. How do I stop or restart sshd under HP-UX? A. HP-UX Secure Shell uses Pluggable Authentication Module for password authentication. Server configuration file is located at /opt/ssh/etc/sshd_config. HP-UX SSHD System Startup and Shutdown […]


Explains how to fix – warning: remote host identification has changed! Openssh server and client error under any Linux / UNIX / BSD like operating systems.


Q. FTP is insecure, how do I securely copy files across a network computer? My network has Windows and Linux systems. A. You need to use Openssh client and server technology to copy between two more network computers. You can also find free ssh client tools. scp copies files between hosts on a network. It […]