Clik here to view.
Linux or UNIX securely copy files across a network computer
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...
View ArticleClik here to view.
Warning: Remote Host Identification Has Changed error and solution
Explains how to fix - warning: remote host identification has changed! Openssh server and client error under any Linux / UNIX / BSD like operating systems.Read answer to: "Warning: Remote Host...
View ArticleClik here to view.
HP-UX start or stop / restart OpenSSH SSHD service
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...
View ArticleClik here to view.
Linux: Openssh (ssh server) deny root user access
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...
View ArticleClik here to view.
Ubuntu Linux: Start / Stop / Restart OpenSSH ( SSH ) Server
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?Read answer to: "Ubuntu Linux: Start / Stop / Restart...
View ArticleClik here to view.
How to: Turning off SFTP server under Linux / UNIX cpanel server
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...
View ArticleClik here to view.
Run SSH In The background After Running a GUI Linux Application
Q. How can I run ssh (ssh gui) in the background after running a Linux GUI application? How do I run any UNIX x11 application in background with SSH Linux client? A. You need to use ssh X forwarding....
View ArticleClik here to view.
Ubuntu / Debian Linux Regenerate OpenSSH Host Keys
How do I regenerate OpenSSH sshd server host keys stored in /etc/ssh/ssh_host_* files under Debian Linux server? Can I safely regenerate ssh host keys using remote ssh session as my existing ssh...
View ArticleClik here to view.
Access Any Remote Server Port Without Modifying Firewall Settings
I've couple of remote servers and I'd like to access few admin only application running on port 10000 and 3001. My firewall only allows port 80, 443, 25, 22 and 110 for public access. Do I need to open...
View ArticleClik here to view.
How To Reuse SSH Connection To Speed Up Remote Login Process
Q. How do I reuse same ssh connection to speed up remote login procedure with OpenSSH client?Read answer to: "How To Reuse SSH Connection To Speed Up Remote Login Process"
View ArticleClik here to view.
sshpass: Login To SSH Server / Provide SSH Password Using A Shell Script
Q. How do I login over ssh without using password less RSA / DSA public keys? How do I use ssh in a shell script? How do I login non-interactivly performing password authentication with SSH and shell...
View ArticleClik here to view.
What Is The Difference Between Authentication And Authorization?
What is the difference between authentication and authorization? Why it is important to understand difference between the two? Authentication vs. Authorization -- what are they and how do they...
View ArticleClik here to view.
OpenBSD Restart / Reload OpenSSH Without Rebooting
There is no rc.d script provided under OpenBSD for sshd service. How do I restart OpenSSH sshd server without rebooting OpenBSD 4.x server?Read answer to: "OpenBSD Restart / Reload OpenSSH Without...
View ArticleClik here to view.
Linux/UNIX: Configure OpenSSH To Listen On an IPv6 Address
How do I enable OpenSSH SSH server to listen on an IPv6 address under Linux or UNIX operating systems?Read answer to: "Linux/UNIX: Configure OpenSSH To Listen On an IPv6 Address"
View ArticleClik here to view.
Install / Append SSH Key In A Remote Linux / UNIX Servers Authorized_keys
How do I install my SSH public key ~/.ssh/id_rsa.pub onto a remote Linux / UNIX server automatically from Linux workstation / Apple OS X laptop without using scp and/or copy & paste method?Read...
View ArticleClik here to view.
OpenSSH Hide Version Number From Clients
How do I hide ssh number from clients? When I type the following command it displays server version number to end users:ssh -v server2.example.com OpenSSH_5.3p1 Debian-3ubuntu4, OpenSSL 0.9.8k 25 Mar...
View ArticleClik here to view.
Linux / Unix: Disable OpenSSH Host Key Checking
I've a remote Unix server running with OpenSSH remote login service. The openssh is configured for passwordless login using ssh keys. Our ISP allows to boot all Linux servers into the rescue mode. It...
View ArticleClik here to view.
Debian Linux Install OpenSSH SSHD Server
How do I install OpenSSH sshd server under Debian GNU/Linux operating systems?Read answer to: "Debian Linux Install OpenSSH SSHD Server"
View ArticleClik here to view.
HowTo: Revoke OpenSSH Keys and Disable User Access
Many users are using ssh to log into a remote machine and append the indicated identity file to machine's ~/.ssh/authorized_keys file. I recently moved one of my server, and I would like to revoke...
View ArticleClik here to view.
Linux / Unix ssh-keygen: Create A Host Key File
How do I create a host key file to use with my applications as I can not use system defined /etc/ssh/ssh_host_rsa_key for non-root account under Linux / Unix / Apple OS X / *BSD operating systems?Read...
View Article