How to Install and Use SSH on Ubuntu 20.04 | 18.04

This brief tutorial shows students and new users how to use the ssh command in Ubuntu to connect to establish secure communication to a remote system over SSH protocol. Secure Shell (SSH) is a cryptographic network protocol that provides encrypted compunction between and clients and servers. It replaces previously unsecured network clients in a networked […]

How to Use SSH Command on Ubuntu 18.04 with Examples

This brief tutorial shows students and new users how to use the ssh command in Ubuntu to connect to establish secure communication to a remote system over SSH protocol. Secure Shell (SSH) is a cryptographic network protocol that provides encrypted compunction between and clients and servers. It replaces previously unsecured network clients in a networked […]

Setup SSH Server for Key Authentication on Ubuntu 17.04 | 17.10

This brief tutorial shows students and new users how to setup OpenSSH server for key authentication or password-less authentication. This setup allows users of the Ubuntu server to logon via SSH without typing passwords. This is a much more secure alternative to SSH password authentication. With password authentication, each time a user wants to logon, […]

Setup OpenSSH Password Authentication on Ubuntu 17.04 | 17.10

SSH password authentication is the default settings that get installed after installing SSH server on Linux systems, including Ubuntu 17.04 | 17.10. When you install SSH server and make no additional changes, all account holders on the system will be able to logon to the SSH server except the root user. This brief tutorial shows […]

Remotely Transfer Files via SSH using SCP on Ubuntu 17.04 / 7.10

Want to transfer files between two Ubuntu servers? If you ever needed to transfer files quickly between two Ubuntu servers, the best way to it is via SSH using Secure Copy (SCP). SCP uses SSH encryption and authentication to securely transfer files between servers quickly and easily. This brief tutorial is going to show students […]

Setup Passwordless Login with PuTTY and Connect to Ubuntu 17.04 | 17.10

PuTTY is a free terminal emulator that supports various network protocols like Telnet, SSH, Rlogin and SCP. It’s probably the most use SSH terminal emulator available today. It’s been around for a very, very long time. Although that are other terminal emulators with more features and lots of protocol support, PuTTY is always going to […]

Secure SSH Server with Two Factor Authentication on Ubuntu 17.04

If you’ve managed a remote Linux server then you know that one of the most used method to connect to that system is via SSH. SSH provides a secure way to login to a server remotely and manage it. It’s probably the default method for majority of webmasters. The default authentication method used by SSH […]

Student question – How to Change SSH Server Default Port on Ubuntu?

Changing your SSH Server default port # from 22 to something else is one way to secure your server. This post shows students show to easily do that with Ubuntu. Students who want to learn how to change SSH server default port # from 22 to something else can follow the steps below.